A-287

**SERIES 2000** 

## MAGNEHELIC[®] DIFFERENTIAL PRESSURE GAGES Indicate Positive, Negative or Differential, Accurate within 1% 

## **CALIBRATION SERVICES AVAILABLE** 

**==> picture [529 x 244] intentionally omitted <==**

**----- Start of picture text -----**<br>
RUBBER PRESSURE RELIEF PLUG<br>WILL UNSEAT ITSELF WHEN GAGE [3] 6-32 X 3/16 [4.76] DEEP<br>IS OVERPRESSURIZED HOLES EQUALLY SPACED ON<br>.025 [.64] SPACE CREATED BY 3 SPACER A Ø4-1/8 [104.78] BOLT CIRCLE<br>PADS WHEN SURFACE MOUNTED.  FOR PANEL MOUNTING<br>DO NOT OBSTRUCT. PROVIDES PATH  17/32<br>FOR RELIEF OF OVERPRESSURE.  [13.49] 1/8 FEMALE NPT<br>1/8 FEMALE HIGH PRESSURE<br>NPT HIGH  CONNECTION<br>| Beet \ — PRESSURE <COvENN<br>1-1/4 [31.75] CONNECTION 1-3/4<br>[44.45]<br>: ee beMAGNEHEUC, ti ge SSSN mc r SS a Ø4-1/2[114.3] 1/8 FEMALENPT LOW PRESSURE heyOn lost /o 1/2<br>Ø4-3/4 CONNECTION [12.70]<br>15/32 [11.91]<br>[120.65] 1/8 FEMALE NPT LOW<br>1-11/16 [42.86] 7/16 [11.11] 11/16 PRESSURE CONNECTION<br>4 Duyer [17.46]<br>17/32<br>Standard Magnehelic [®]  gage \ An 4 [13.49] ø4-3/4 [120.65] 1/8 FEMALE NPT<br>1-1/4 PANEL CUTOUT HIGH PRESSURE<br>2. [31.75] g CONNECTION<br>AY INCHES OF WATER “Y \ : “| om ant = W<br>ø5<br>om \MAGNE, | SB) LN ie, [127] iN 1-3/4<br>ae | | 2a \ | i ø4-47/64 accel [44.45]<br>ø4-1/2 [120.27]<br>: = [114.3] Lea + a [12.70]1/2<br>ø5-1/2  15/32 11/16 1/8 FEMALE<br>High Accuracy MagnehelicShown with optional -SS bezel [® ] gage MOUNTING RING[139.70]  [11.91] 2-17/32[64.29] [4.76]3/16 [17.46] NPT LOWPRESSURE CONNECTION<br>VIDEOONLINE<br>**----- End of picture text -----**<br>


Select the **Series 2000 Magnehelic[®] Differential Pressure Gages** for a versatile low differential pressure gage with a wide choice of 81 models and 27 options to choose from. Using Dwyer’s simple, frictionless Magnehelic[®] gage movement, it quickly indicates air or non-corrosive gas pressures--either positive, negative (vacuum) or differential. The design resists shock, vibration, over-pressures and is weatherproof to IP67. 

Select the –HA High Accuracy Magnehelic[®] gage option for an accuracy within 1% of full-scale. Also included with the –HA option at no extra cost are a mirrored scale overlay and a 6 point calibration certificate. 

## **BENEFITS/FEATURES** 

- Easy to read gage through undistorted plastic face permits viewing from far away 

- Patented design provides quick response to pressure changes means no delay in assessing critical situations 

- Durable and rugged housing and high-quality components combine to provide longservice life and minimized down-time 

- High accuracy option is twice as accurate as the standard Magnehelic[®] gage 

## **APPLICATIONS** 

- Filter monitoring 

- Air velocity with Dwyer[®] pitot tube 

- Blower vacuum monitoring 

- Fan pressure indication 

- Duct, room or building pressures 

- Clean room positive pressure indication 

## **ACCESSORIES** 

## **Model Description** 

**A-432** Portable kit; combine carrying case with any Magnehelic[®] gage of standard range, except high pressure connection. Includes 9 ft (2.7 m) of 3/16˝ ID rubber tubing, standhang bracket and terminal tube with holder **A-605** Air filter gage accessory kit; adapts any standard Magnehelic[®] gage for use as an air filter gage. Includes aluminum surface mounting bracket with screws, two 5 ft (1.5 m) lengths of 1/4˝ aluminum tubing, two static pressure tips and two molded plastic vent valves, integral compression fittings on both tips and valves **A-605B** Air filter gage accessory kit; air filter kit with two plastic open/close valves, two 4˝ steel static tips, plastic tubing and mounting flange **A-605C** Air filter gage accessory kit; air filter kit with two plastic open/close valves, two plastic static tips, plastic tubing and mounting flange 

## **SPECIFICATIONS** 

**Service:** Air and non-combustible, compatible gases (natural gas option available). **Note:** May be used with hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi. 

**Wetted Materials:** Consult factory. 

**Housing:** Die cast aluminum case and bezel, with acrylic cover. Exterior finish is coated gray to withstand 168 hour salt spray corrosion test. **Accuracy:** ±2% (-HA model ±1) of FS (±3% (-HA ±1.5%) on -0, -100PA, -125PA, -10MM and ±4% (-HA ±2%) on -00, -60PA, -6MM ranges), throughout range at 70°F (21.1°C). 

**Pressure Limits:** -20 in Hg to 15 psig (-0.677 to 1.034 bar); MP option: 35 psig (2.41 bar); HP option: 80 psig (5.52 bar). **Enclosure Rating:** IP67. 

**Overpressure:** Relief plug opens at approximately 25 psig (1.72 bar), standard gages only.u **Temperature Limits:** 20 to 140°F* (-6.67 to 60°C). -20°F (-28°C) with low temperature option. 

**Size:** 4˝ (101.6 mm) diameter dial face. 

**Mounting Orientation:** Diaphragm in vertical position. Consult factory for other position orientations. 

**Process Connections:** 1/8˝ female NPT duplicate high and low pressure taps - one pair side and one pair back. 

**Weight:** 1 lb 2 oz (510 g), MP & HP 2 lb 2 oz (963 g). 

**Standard Accessories:** Two 1/8˝ NPT plugs for duplicate pressure taps, two 1/8˝ pipe thread to rubber tubing adaptor, and three flush mounting adapters with screws. (Mounting and snap ring retainer substituted for three adapters in MP & HP gage accessories.) 

**Compliance:** Meets the technical requirements of EU Directive 2011/65/EU (RoHS II). **Note:** -SP models not RoHS approved. 

*Low temperature models available as special options. 

**Note:** For applications with high cycle rate within gage total pressure rating, next higher rating is recommended. See Medium and High pressure options. 

USA: California Proposition 65 

**A-605** 

**WARNING:** This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 

**A-432** 

u **Over Protection Note: See page 21 (Series 2000)** 

**20** DWYER INSTRUMENTS, LLC   |   dwyer-inst.com 

**SERIES 2000** 

## MAGNEHELIC[®] DIFFERENTIAL PRESSURE GAGES Indicate Positive, Negative or Differential, Accurate within 1% es **CALIBRATION SERVICES AVAILABLE** 

**Bezel** provides flange for flush mounting in panel. 

**O-ring seal** for cover assures pressure integrity of case. 

**Clear plastic face** is highly resistant to breakage. Provides undistorted viewing of pointer and scale. 

## **OVERPRESSURE PROTECTION** 

**Blowout plug** is comprised of a rubber plug on the rear which functions as a relief valve by unseating and venting the gage interior when over pressure reaches approximately 25 psig (1.7 bar). To provide a free path for pressure relief, there are four spacer pads which maintain 0.023˝ clearance when gage is surface mounted. Do not obstruct the gap created by these pads. 

**Precision litho-printed scale** is accurate and easy to read. 

**Calibrated range** spring is flat spring steel. Small amplitude of motion assures consistency and long life. It reacts to pressure on diaphragm. Live length adjustable for calibration. 

The blowout plug is not used on models above 180˝ of water pressure, medium or high pressure models, or on gages which require an elastomer other than silicone for the diaphragm. The blowout plug should not be used as a system overpressure control. High supply pressures may still cause the gage to fail due to over pressurization, resulting in property damage or serious injury. Good engineering practices should be utilized to prevent your system from exceeding the ratings of any component. 

**Red tipped pointer** of heat treated aluminum tubing is easy to see. It is rigidly mounted on the helix shaft. 

**Pointer stops** of molded rubber prevent pointer over-travel without damage. 

**“Wishbone” assembly** provides mounting for helix, helix bearings and pointer shaft. 

**Jeweled bearings** are shock-resistant mounted; provide virtually friction-free motion for helix. Motion damped with high viscosity silicone fluid. 

**Die cast aluminum case** is precision made and iridite-dipped to withstand 168 hour salt spray corrosion test. Exterior finished in baked dark gray hammerloid. One case size is used for all standard pressure options, and for both surface and flush mounting. 

**Helix** is precision made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the magnetic field to move the pointer across the scale. 

**Silicone rubber diaphragm** with integrally molded O-ring is supported by front and rear plates. It is locked and sealed in position with a sealing plate and retaining ring. Diaphragm motion is restricted to prevent damage due to overpressures. 

**Zero adjustment screw** is conveniently located in the plastic cover, and is accessible without removing cover. O-ring seal provides pressure tightness. 

**Samarium Cobalt magnet** mounted at one end of range spring rotates helix without mechanical linkages. 

**MODEL CHART Range, Range, Inches of Range, MM of Range, Dual Scale Air Velocity Units Model Water Model PSI Model Water Model kPa** For use with pitot tube **2000-00N†••** .05-0-.2 **2201** 0-1 **2000-6MM†••** 0-6 **2000-0.5KPA** 0-0.5 **Range, in w.c./ 2000-00†••** 0-.25 **2202** 0-2 **2000-10MM†•** 0-10 **2000-1KPA** 0-1 **Model Velocity F.P.M. 2000-0†•** 0-.50 **2203** 0-3 **2000-15MM** 0-15 **2000-1.5KPA** 0-1.5 **2000-00AV†••** 0-.25/300-2000 **2001** 0-1.0 **2204** 0-4 **2000-25MM** 0-25 **2000-2KPA** 0-2 **2000-0AV†•** 0-.50/500-2800 **2002** 0-2.0 **2205** 0-5 **2000-30MM** 0-30 **2000-2.5KPA** 0-2.5 **2001AV** 0-1.0/500-4000 **2003** 0-3.0 **2210*** 0-10 **2000-50MM** 0-50 **2000-3KPA** 0-3 **2002AV** 0-2.0/1000-5600 **2004** 0-4.0 **2215*** 0-15 **2000-80MM** 0-80 **2000-4KPA** 0-4 **2005AV** 0-5.0/2000-8800 **20052006** 0-5.0 0-6.0 **2220* 2230**** 0-200-30 **2000-100MM2000-125MM** 0-1000-125 **2000-5KPA2000-8KPA** 0-50-8 **2010AV** 0-10/2000-12500 **2008** 0-8.0 **Range, 2000-150MM** 0-150 **2000-10KPA** 0-10 **2010** 0-10 **CM of 2000-200MM** 0-200 **2000-15KPA** 0-15 **2012** 0-12 **Model Water 2000-250MM** 0-250 **2000-20KPA** 0-20 **2015** 0-15 **2000-15CM** 0-15 **2000-300MM** 0-300 **2000-25KPA** 0-25 **2020** 0-20 **2000-20CM** 0-20 **2000-30KPA** 0-30 **2025** 0-25 **2000-25CM** 0-25 **2030** 0-30 **2000-50CM** 0-50 **2040** 0-40 **2000-80CM** 0-80 **Zero Center Ranges Zero Center Ranges 2050** 0-50 **2000-100CM** 0-100 **2300-6MM†••** 3-0-3 **2300-1KPA** .5-0-.5 **2060** 0-60 **2000-150CM** 0-150 **2300-10MM†•** 5-0-5 **2300-2KPA** 1-0-1 **2080** 0-80 **2000-200CM** 0-200 **2300-20MM†•** 10-0-10 **2300-2.5KPA** 1.25-0-1.25 **2100** 0-100 **2000-250CM** 0-250 **2300-3KPA** 1.5-0-1.5 **2120** 0-120 **2000-300CM** 0-300 **Model Range, Pa 2150** 0-150 **2000-60NPA†••** 10-0-50 **2160** 0-160 ~~EE~~ **Zero Center Ranges 2000-30PA†••** 0-30 ~~R~~ **Dual Scale English/Metric Models** ~~|~~ **2180*** 0-180 **2300-4CM** 2-0-2 **2000-60PA†••** 0-60 **2250*** 0-250 **2300-10CM** 5-0-5 **2000-100PA†•** 0-100 **Range, Range, 2300-30CM** 15-0-15 **2000-125PA†•** 0-125 **Model in w.c. Pa or kPa** ~~oo~~ **Zero Center Ranges 2000-250PA** 0-250 **2000-00D†••** 0-.25 0-62 Pa **2300-00†••** 0.125-0-0.125 **2000-300PA** 0-300 **2000-0D†•** 0-0.5 0-125 Pa **2300-0†•** .25-0-.25 **2000-500PA** 0-500 **2001D** 0-1.0 0-250 Pa **2301** .5-0-.5 **2000-750PA** 0-750 **2002D** 0-2.0 0-500 Pa **2302** 1-0-1 **2000-1000PA** 0-1000 **2003D** 0-3.0 0-750 Pa **2304** 2-0-2 **Zero Center Ranges 2004D** 0-4.0 0-1.0 kPa **2310** 5-0-5 ~~—~~ **Model Range, Pa 2005D** 0-5.0 0-1.25 kPa **2320** 10-0-10 **2300-60PA†••** 30-0-30 **2006D** 0-6.0 0-1.5 kPa **2330** 15-0-15 **2300-100PA†•** 50-0-50 **2008D** 0-8.0 0-2.0 kPa **2300-120PA** 60-0-60 **2010D** 0-10 0-2.5 kPa **2300-200PA** 100-0-100 **2015D** 0-15 0-3.7 kPa **2300-250PA** 125-0-125 **2020D** 0-20 0-5 kPa **2300-300PA** 150-0-150 **2025D** 0-25 0-6.2 kPa **2300-500PA** 250-0-250 **2050D** 0-50 0-12.4 kPa **2300-1000PA** 500-0-500 **2060D** 0-60 0-15 kPa 

## **VELOCITY AND VOLUMETRIC FLOW UNITS** 

Scales are available on the Magnehelic[®] gage that read in velocity units (FPM, m/s) or volumetric flow units (SCFM, m[3] /s, m[3] /h). Stocked velocity units with dual range scales in inches w.c. and feet per minute are shown above. For other ranges contact the factory. When ordering volumetric flow scales please specify the maximum flow rate and its corresponding pressure. **Example:** 0.5 in w.c. = 16,000 CFM. 

USA: California Proposition 65 **WARNING:** This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 

~~TT~~ **†** These ranges calibrated for vertical scale position. **•** Accuracy ±3%. **••** Accuracy ±4%. *MP option standard. **HP option standard. **ACCESSORIES Model Description A-135** Rubber gasket for panel mounting **A-310A** 3-way vent valves. In applications where pressure is continuous and the Magnehelic[®] gage is **A-310A** connected by metal or plastic tubing which cannot be easily removed, we suggest using Dwyer **A-321** A-310A vent valves to connect gage. Pressure can then be removed to check or re-zero the gageSafety relief valve **WARNING: A-401** Plastic carry case ~~To~~ **A-448** 3-piece magnet kit for mounting Magnehelic[®] gage directly to magnetic surface : 

DWYER INSTRUMENTS, LLC   |   dwyer-inst.com 

**21** 

## HIGH ACCURACY MAGNEHELIC[®] DIFFERENTIAL PRESSURE GAGE 

**CALIBRATION SERVICES AVAILABLE** 

**==> picture [38 x 37] intentionally omitted <==**

**----- Start of picture text -----**<br>
>) VIDEOONLINE<br>**----- End of picture text -----**<br>


Duyer Ba. **OPTIONS - HIGH ACCURACY MAGNEHELIC[®] Twice as accurate as the** a **GAGE standard Magnehelic[®] gage** = **To order** — **add suffix: Description Mirrored scale overlay** stoman(“ase ] **-HA** High accuracy Magnehelic[®] gage. **eliminates parallax error** Accuracy within 1% and weatherproof. Also includes mirrored scale overlay and a six point calibration certificate **-SS** Corrosion resistant brushed 304 stainless **IP67 weatherproof housing** steel bezel **6-point calibration certificate included** 

## **Optional brushed SS bezel** 

**Accuracy Specifications: See page 20 (Series 2000)** 

## ADDITIONAL GAGE OPTIONS 

## **OPTIONS - OTHER OPTIONAL BEZELS** 

**To order add suffix: Description** 

**-CB** Chrome bezel option: A chrome plated aluminum bezel for an aesthetically pleasing finish when mounting on metal surfaces such as control panels. **-SB** Stainless steel bezel option: 304 stainless steel electro polished Ra 16 finished bezel. **-SS** Corrosion resistant brushed 304 stainless steel bezel 

## **OPTIONS - LED SET POINT INDICATOR** 

**To order add suffix: Description** 

**-SP** Bright red LED on right scale shows when set point is reached. Field adjustable from gage face, unit operates on 12-24 VDC. Set point indicator option comes with medium pressure (MP) bezel. 

**Note:** 4-13/16˝ hole for flush mounting. 

**==> picture [179 x 177] intentionally omitted <==**

**----- Start of picture text -----**<br>
LED set point indicator Adjustable signal flag<br>noe oF<br>Py /lfY/ 2. 40, 60 initia‘ ON y 3 75 10 35 i 9s \<br>{ @ MAGNEHELIC, off ‘a an MAGNEHELIC, “@yf<br>2 eee yO<br>Transparent overlay Mirrored scale overlay<br>a =.<br>i) 10 Maiti,30 39<br>SES wy<br>= hl e MAGNEHELIC e<br>= [=]<br>i<br>A) ~<br>Integrated mounting plate<br>**----- End of picture text -----**<br>


**OPTIONS - ADJUSTABLE SIGNAL FLAG** 

**To order add suffix: Description** 

**-ASF** Integral with plastic gage cover. Available for most models except those with medium or high pressure construction. Can be ordered with gage or separate. 

**OPTIONS - TRANSPARENT OVERLAYS To order add suffix: Description -G** Green (to highlight and emphasize critical pressures) **-R** Red (to highlight and emphasize critical pressures) **-Y** Yellow (to highlight and emphasize critical pressures) **OPTIONS - MIRRORED SCALE OVERLAY To order add suffix: Description -M** A mirrored scale overlay is also available to assist in reducing parallax error. **OPTIONS - INTEGRATED MOUNTING PLATE To order add suffix: Description -AHU1** Furnished with attached surface mounting plate **-AHU2** Furnished with attached surface mounting plate and including A-481 installer kit (2 plastic static pressure tips and 7´of PVC tubing) 

**OPTIONS - FOR HIGH STATE PRESSURE APPLICATIONS To order add suffix: Description -HP** High pressure option: for pressures to 80 psig **-MP** Medium pressure option: for pressures to 35 psig 

## **OPTIONS** 

**To order add suffix: Description -FC** Factory calibration certificate **-LT** Low temperatures to -20°F (-28°C) **-NIST** NIST traceable calibration certificate 

USA: California Proposition 65 

**WARNING:** This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 

**22** DWYER INSTRUMENTS, LLC   |   dwyer-inst.com 

## MAGNEHELIC[®] GAGE MOUNTING ACCESSORIES 

**==> picture [32 x 25] intentionally omitted <==**

**----- Start of picture text -----**<br>
Pressure<br>reference<br>port<br>**----- End of picture text -----**<br>


**==> picture [190 x 96] intentionally omitted <==**

**----- Start of picture text -----**<br>
A-610 A-369<br>A-286 A-300<br>VIDEOONLINE<br>**----- End of picture text -----**<br>


**==> picture [183 x 96] intentionally omitted <==**

**----- Start of picture text -----**<br>
A-464 A-464-SS A-299<br>A-368 A-371<br>**----- End of picture text -----**<br>


A single case size is used for most models of Magnehelic[®] gages. They can be flush or surface mounted with standard hardware supplied. Complete mounting and connection fittings plus instructions are furnished with each instrument. A 4-9/16˝ hole is required for flush panel mounting. 

Flush mounting is easily accomplished with the new A-300 Flush Mounting bracket. This bracket provides a solution to quickly and conveniently flush mount the Magnehelic[® ] gage. The A-300 is ideal for mounting the Magnehelic[®] gage on control panel doors. 

The A-368 is a simple bracket for quickly surface mounting the Magnehelic[®] gage. After securing the Magnehelic[®] gage to the A-368 bracket, mount the bracket on any flat surface. 

The A-369 allows the Magnehelic[®] gage to be easily carried to locations where pressure readings need to be taken. The A-369 can stand on its own or hang on a nail or hook. 

|**ACCESSORIES**|**ACCESSORIES**|
|---|---|
|**Model**|**Description**|
|**A-286**<br>**A-299**<br>**A-300**<br>**A-368**<br>**A-369**<br>**A-371**<br>**A-464-SS**<br>**A-464**<br>**A-610**|Magnehelic®gage panel mounting flange<br>Mounting bracket, flush mount for Magnehelic®gage, bracket is then<br>surface mounted, steel with gray hammerloid epoxy finish<br>Flush mounting bracket<br>Surface mounting plate, aluminum, for Magnehelic®gage<br>Stand-hang bracket, aluminum, for Magnehelic®gage<br>Surface mounting bracket, use with medium pressure (-MP) or high<br>pressure (-HP) models only<br>Stainless steel flush mount kit for Magnehelic®gage<br>Flush mount kit for Magnehelic®gage<br>Pipe mountingkit for installingon 1-1/4˝ to 2˝ horizontal or verticalpipe|



## **SERIES A-320** 

## INSTRUMENT ENCLOSURES Protects Various Instruments 

**==> picture [190 x 38] intentionally omitted <==**

**----- Start of picture text -----**<br>
,<br>® ®<br>A-320-A1 A-320-B1<br>VIDEOONLINE<br>**----- End of picture text -----**<br>


**A-320-BC** 

**A-320-A-SS** 

**A-320-B-SS** 

The **Series A-320 Instrument Enclosures** protect instruments in all applications. The enclosures, available in plastic and stainless steel, fit a variety of gages including the Series 605 transmitter, DM-2000, 3000MR/MRS and DH3. All models include silicone tubing, Banjo fittings, and threaded pressure connections pre-installed. The threaded pressure connections allow the user to easily change the connection type through the use of fittings or adapters. This modification can be implemented to allow connection to a wide variety of plastic or metal tubing. 

## **SPECIFICATIONS** 

**Housing Material:** ABS plastic or 304 SS. **Process Connection:** 1/8˝ female NPT (-SS models: 1/8˝ BSPT). **Enclosure Rating:** Plastic models: IP66. **Weight:** A-320-A1: 1.1 lb (0.5 kg); A-320-B1: 1.4 lb (0.65 kg); A-320-BC: 1.4 lb (0.65 kg); A-320-A-SS: 2.3 lb (1.05kg); A-320-B-SS: 3.0 lb (1.35 kg). 

|**MODEL CHART**|**MODEL CHART**|
|---|---|
|**Model**|**Description**|
|**A-320-A1**<br>**A-320-B1***<br>**A-320-BC**<br>**A-320-A-SS**<br>**A-320-B-SS**|2000 Magnehelic®gage<br>3000MR/MRS Photohelic®switch/gage, Series 605 Magnehelic®<br>differential pressure transmitter, DH3 Digihelic®pressure controller,<br>2000 Magnehelic®gage with medium and high pressure options<br>2000 Magnehelic®gage, DM-1000 DigiMag®digital differential<br>pressure gage, DM-2000 differential pressure transmitter, instruments<br>with backwards compatible bezel option<br>2000 Magnehelic®gage<br>2000 Magnehelic® gage,DM-2000 differentialpressure transmitter|
|*For DH3 to fit on A-320-B1 the casingon the electricalplugmust be removed.||



**ACCESSORIES Model Description A-339-SS** 1/8˝ male BSPT to 3/16˝ hose barb 

DWYER INSTRUMENTS, LLC   |   dwyer-inst.com 

**23**