HEL-707-T-0-12-00

# Thin Film Platinum RTDs **HEL-700 Series** 

Datasheet 

## Thin Film Platinum RTDs 

The HEL-700 Series Thin Film Platinum RTDs (Resistance Temperature Detectors) are designed to monitor or control critical temperatures in industrial applications. They provide a linear change in resistance versus temperature, combining high linearity, stability, accuracy, and wide temperature range in a small, fast-response package. 

The HEL-700 Series is designed to measure temperatures from -75 °C to 540 °C [-100 °F to 1000 °F] with high accuracy. These fully-assembled elements are ready-to-use in probe assemblies, without the need for fragile splices to extension leads. 

These products are manufactured using a thin layer of platinum deposited on an alumina substrate and are laser trimmed to a resistance interchangeability of a standard ±0.2% (±0.5 °C accuracy) or optional  ±0.1% (±0.3 °C accuracy). The sensor chip is then glassed, wired and potted or ceramic fired to result in a cylindrical alumina package with either TFE Teflon[®] - or fiberglass-insulated lead wires. 

## Key Features 

- Wide temperature range 

## Potential Applications 

Temperature sensing for monitoring, compensation and regulation in: 

- Interchangeable 

- Accurate 

- Linear resistance vs temperature 

- Fast response 

- Laser trimmed 

- Ceramic case material 

- TFE Teflon[®] or fiberglass leadwires 

- Multiple small sizes 

- Ready-to-use, fully assembled elements 

## **InduStrIaL** 

- HVAC equipment 

- Instrument and probe assemblies 

- Process control 

- Motor windings and bearings 

- Battery packs 

- Environmental chambers 

- Ovens and kilns 

- Drill holes in large objects 

## **MEdICaL** 

- Autoclaves 

## **aErOSPaCE/dEFEnSE** 

- Aircraft 

- Space vehicles 

Wide temperature range • interCHangeaBLe • aCCurate 

**2** sensing.honeywell.com 

## Thin Film Platinum RTDs, HEL-700 Series 

**==> picture [542 x 419] intentionally omitted <==**

**----- Start of picture text -----**<br>
table 1. Specifications<br>Characteristic Condition Parameter<br>Alpha:<br>   R0 = 1000 Ω 0 °C 0.00375 Ω/Ω/°C<br>   R0 = 100 Ω  0.00385 Ω/Ω/°C<br>Temperature range:<br>   TFE Teflon — -70 °C to 260 °C [-94 °F to 500 °F]<br>   fiberglass -75 °C to 540 °C [-100 °F to 1000 °F]<br>Temperature accuracy:<br>   R0 ±0.2% trim (standard) — ±0.5°C or 0.8% of temperature, whichever is greater<br>   R0 ±0.1% trim (optional) ±0.3°C or 0.6% of temperature, whichever is greater<br>Base resistance and interchangeability, R0 ±∆R0 [:]<br>   R0 ±0.2% trim (standard) 0 °C 1000 Ω ±2 Ω<br>   R0 ±0.1% trim (optional) 1000 Ω ±1 Ω<br>Linearity:<br>   -40 °C to 125 °C — ±0.1% of full scale<br>   -75 °C to 540 °C ±2.0% of full scale<br>water at 3 ft/s <0.5 s for 0.086 in O.D.<br>Time constant<br>still water <1.0 s for 0.086 in O.D.<br>— 2 mA max. minimal self heating errors of 1 °C;<br>Operating current<br>1 mA recommended<br>Stability occupied environments <0.25 °C /year; 0.05 °C /5 years<br>—<br>Self heating <15 mW/°C typ. for 0.086 in O.D.<br>Insulation resistance 50 Vdc at 25 °C >50 MΩ<br>Construction/material:<br>   case — high purity alumina<br>   Teflon [®] -insulated leads nickel-coated stranded copper, epoxy potting<br>   fiberglass-insulated leads nickel-coated stranded copper, ceramic potting<br>**----- End of picture text -----**<br>


|Construction/material:<br>case<br>Teflon®-insulated leads<br>fiberglass-insulated leads<br>—|Construction/material:<br>case<br>Teflon®-insulated leads<br>fiberglass-insulated leads<br>—|Construction/material:<br>case<br>Teflon®-insulated leads<br>fiberglass-insulated leads<br>—|high purity alumina<br>nickel-coated stranded copper, epoxy potting<br>nickel-coated stranded copper, ceramic potting|
|---|---|---|---|
|**table 2. Constant Values (**β**= 0 and C = 0 for t > 0 °C)**||||
|**Constant**|**1000 Ω**|**100 Ω**|**Functional Behavior**<br>RT= R0(1 + AT + BT2- 100CT3+ CT4)<br>Where:<br>RT= Resistance (Ω) at temperature T (°C)<br>R0= Resistance (Ω) at 0 °C<br>T = Temperature (°C)<br>A =α +αδB=-αδ CT<0=-αβ<br> 100 1002 1004|
|Alphaα(°C-1)|0.00375 ±0.000029|0.003850 ±0.000010||
|Deltaδ(°C)|1.605 ±0.009|1.4999 ±0.007||
|Betaβ(°C)|0.16|0.10863||
|A (°C-1)|3.81 x 10-3|3.908 x 10-3||
|B (°C-2)|-6.02 x 10-7|-5.775 x 10-7||
|C (°C-4)|-6.0 x 10-12|-4.183 x 10-12||



## **CAUTION** 

## **PRODUCT DAMAGE** 

- Ensure proper ESD (Electrostatic Discharge) precautions are followed when handling this product. 

**Failure to comply with these instructions may result in product damage.** 

**3** 

sensing.honeywell.com 

Thin Film Platinum RTDs, HEL-700 Series 

**table 3. accuracy vs temperature** 

## **table 4. nISt Calibration** 

|**temperature**<br>**(°C)**<br>-100<br>0<br>100<br>200<br>300<br>400<br>500|**tolerance**<br>**Standard trim**<br>**(±0.2%)**<br>**Optional trim**<br>**(±0.1%)**<br>**±∆r1**<br>**(Ω)**<br>**±∆t**<br>**(°C)**<br>**±∆r1**<br>**(Ω)**<br>**±∆t**<br>**(°C)**<br>2.9<br>0.8<br>2.4<br>0.6<br>2.0<br>0.5<br>1.0<br>0.3<br>2.9<br>0.8<br>2.2<br>0.6<br>5.6<br>1.6<br>4.3<br>1.2<br>8.2<br>2.4<br>6.2<br>1.8<br>11.0<br>3.2<br>8.3<br>2.5<br>12.5<br>4.0<br>9.6<br>3.0||**temperature**<br>**(°C)**<br>**Standard temperature Point**<br>**(±∆t (°C))**<br>**1**<br>**2**<br>**3**<br>-100<br>0.5<br>0.27<br>0.15<br>0<br>0.03<br>0.03<br>0.03<br>100<br>0.4<br>0.11<br>0.07<br>200<br>0.8<br>0.02<br>0.08<br>300<br>1.2<br>0.33<br>6.2<br>400<br>1.6<br>0.5<br>8.3<br>500<br>2.0<br>0.8<br>9.6<br>600<br>2.6<br>1.2<br>10.4<br>1NIST-traceable calibration provides resistance readings at 1, 2 or 3|
|---|---|---|---|
|600|15.1<br>4.8<br>10.4<br>3.3||standard temperature points to yield a resistance versus temperature|



1NIST-traceable calibration provides resistance readings at 1, 2 or 3 standard temperature points to yield a resistance versus temperature curve with 10x better accuracy. 

11000 Ω RTD. Divide ∆ by 10 for 100 Ω RTD. 

**Figure 1. resistance vs temperature** 

3500 350 3000 300 2500 250 2000 200 1000 Ω, 375 alpha 100 Ω, 385 alpha 1500 150 1000 Ho ~~e~~ 100 500 50 0 CEE 0 -100 0 100 200 300 400 500 600 **Temperature (°C) Figure 2. nomenclature and Ordering Guide** For example, a **HEL-705-U-0-12-C1** part number defines an HEL-700 Series Thin Film RTD with two, 28 gauge TFE Teflon[®] insulted leadwires, an alpha of 1000 Ω: 0.00375 Ω/Ω/°C, a standard ±0.2% trim resistance, 12 inch leadwires, and a NIST calibration report at 0 °C. ~~ne~~ **HEL705U012C1** Product Series Leadwire Insulation Material, Resistance and Resistance Leadwire NIST Calibration Report Y Gauge and Number 4 Alpha YY YY? Trim Length f **HEL-700** Thin FilmSeries **705** 1000 Ω: 2-wire, 100 Ω: 2-wire[TFE Teflon][®][, 28 gauge;] **U** 1000 Ω: 0.00375 Ω/Ω/°C **0** Standard: ±0.2% **12** 12 inches **00** none Platinum RTDs **707**[fiberglass, 28 gauge;] **T** 100 Ω: 0.00385 Ω/Ω/°C **1** Optional: ±0.1% **C1** at 0 °C 1000 Ω: 2-wire, 100 Ω: 2-wire (DIN Standard) **711**[TFE Teflon][®][, 28 gauge;] **C2** at 0 °C and 100 °C 1000 Ω: 2-wire, 100 Ω: 3-wire **712**[fiberglass, 28 gauge;] **C3** at 0 °C, 100 °C and 260 °C 1000 Ω: 2-wire, 100 Ω: 3-wire **716**[TFE Teflon][®][, 24 gauge;] 1000 Ω: 2-wire, 100 Ω: 3-wire **717**[fiberglass, 24 gauge;] 1000 Ω: 2-wire, 100 Ω: 3-wire ~~= 4~~ **4** sensing.honeywell.com 

Thin Film Platinum RTDs, HEL-700 Series 

## **Figure 3. all available Standard Configurations** 

**teflon**[®] **-Insulated Leadwires Fiberglass-Insulated Leadwires** ~~eee~~ **HEL-705 HEL-707 2-wire 2-wire only only HEL-711** ~~—— |~~ **HEL-712** ~~=——~~ 2 **2-wire** 2 **2-wire** 2 **3-wire** 2 **3-wire HEL-716 HEL-717** 2 **2-wire** 2 **2-wire** 2 **3-wire** 2 **3-wire** 3 **Figure 4. dimensional drawings (For reference only: mm [in].) HEL-705** 4,83 305 [0.187] [12] **2-wire** LL. ~~fo~~ 2,29 **only** [0.086] **HEL-707** 6,35 305 **2-wire** ee [0.25] [12] 2,29 **only** [0.086] **HEL-711, HEL-712** 15,24 305 [0.60] [12] LC, ~~OTT~~ 2 **2-wire** 2,79 [0.11] 6 ~~Oe~~ 15,24 305 Se [0.60] [12] 2 **3-wire** 2,79 [0.11] 0 ~~e~~ e **HEL-716, HEL-717** 15,24 305 [0.60] [12] lo. fee 2 **2-wire** 3,30 [0.13] ~~o—~~ 15,24 ~~—~~ 305 ~~—~~ [0.60] [12] to f ~~e~~ e 2 **3-wire** 3,30 [0.13 —— ~~—~~ — ~~—~~ sensing.honeywell.com **5** 

**5** 

## Thin Film Platinum RTDs, HEL-700 Series 

**Figure 5. Circuits** 

**==> picture [154 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
Wheatstone Bridge 2-Wire Interface<br>**----- End of picture text -----**<br>


**==> picture [542 x 588] intentionally omitted <==**

**----- Start of picture text -----**<br>
+Vs<br>R1 L1<br>RT<br>VO<br>L2<br>R2 R3<br>Linear Output Voltage<br>+10V<br>10 kΩ<br>+Vs<br>9 kΩ 10 kΩ + VO=0.001 RT<br>-<br>+Vs<br>VR=IV + 10 kΩ -Vs<br>-<br>1kΩ -Vs RT 10 kΩ<br>1kΩ<br>adjustable Point (Comparator) Interface<br>Vs=5 V<br>2 kΩ 2 kΩ<br>+<br>VO<br>-<br>5 kΩ<br>RT<br>2 kΩ 2 kΩ<br>**----- End of picture text -----**<br>


**6 sensing.honeywell.com** 

## **addItIOnaL InFOrMatIOn** 

The following associated literature is available at sensing.honeywell.com: 

- Temperature Sensors Line Guide 

- Thermal Sensors Range Guide 

## **WarnInG PErSOnaL InJurY** 

DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. 

**Failure to comply with these instructions could result in death or serious injury.** 

## **WarnInG** 

## **MISuSE OF dOCuMEntatIOn** 

- The information presented in this product sheet is for reference only. Do not use this document as a product installation guide. 

- Complete installation, operation, and maintenance information is provided in the instructions supplied with each product. 

**Failure to comply with these instructions could result in death or serious injury.** 

## **Sales and Service** 

Honeywell serves its customers through a worldwide network of sales offices, representatives and distributors. For application assistance, current specifications, pricing or name of the nearest Authorized Distributor, contact your local sales office or email us at **info.sc@honeywell.com** . Visit us on the Web at **sensing.honeywell.com** 

## **Phone and Fax:** 

Asia Pacific +65 6355-2828 +65 6445-3033 Fax Europe +44 (0) 1698 481481 +44 (0) 1698 481676 Fax Latin America +1-305-805-8188 +1-305-883-8257 Fax USA/Canada +1-800-537-6945 +1-815-235-6847 +1-815-235-6545 Fax 

## **WarrantY/rEMEdY** 

Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Honeywell’s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items it finds defective. **the foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages.** 

While we provide application assistance personally, through our literature and the Honeywell website, it is up to the customer to determine the suitability of the product in the application. 

Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. 

Sensing and Control Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 

**honeywell.com** 

009080-1-EN June 2014 © 2014 Honeywell International Inc. All rights reserved.