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Technical Data | Installation & Operation | Ordering Data | Downloads | Back
Space Air Temperature Sensors
High Ventilation
Design has large ventilation slots allowing maximum air to flow past the sensor
for fast response and accurate readings. Our new thin film sensor has faster
response than the older wire wound elements.
We mount the sensing element and a "Phoenix" terminal strip securely on a circuit board. We have named this design our versatile model since the large housing allows a variety of additional electronics such as temperature transmitters and humidity transmitters to be added.
Platinum RTD's are the most stable temperature sensors between -50 and 400°C. They show almost no calibration drift with time. Their stability, wide temperature range and almost linear output make them the choice in demanding applications. Our standard RTD uses a 100 ohm thin film element to DIN 43 760 (IEC 751) with a tolerance of 0.3 °C. We also supply 1000 ohm and wire wound elements.
NTC Thermistors are the most sensitive sensors from -50°C to +150°C with temperature coefficients as high as several percent per degree C. This means that lead resistance has minimal effect on system accuracy. Our standard thermistor has a 10K resistance at 25°C and a tolerance of ± 0.2°C. Other calibrations and accuracies are available.
4-20mA Transmitters using 100 ohm RTD's are available in the same housing when RTD's have been specified for use with a panel that will not accept RTD's directly. For this choice change the TS designation in the order number to TT and specify the range.
Space Air Temperature Sensors - Technical Data
Dimensions: 4 5/8" L x 1 5/8" H x 3" W
Space Air Temperature Sensors - Installation & Operation
Temperature Sensors
InstallationAll Enercorp thermistor temperature sensors are unaffected by polarity or position. Units with time over-ride (TOS) or setpoint over-ride (SS) features have labelled terminal blocks. All other versions are supplied with 22 awg leads.
Troubleshooting| Problem | Cause |
| Sensor reads 0 or only a few ohms | Sensor or leads are shorted |
| Sensor reads over full scale or very high | Sensor or leads are open |
| Readings are erratic | Loose connection |
Calibration
These sensors have
no built-in means of calibration. Minor adjustments must be made at the receiving
instrument or DDC panel. If an adjustment of more than a degree is required
first check your connections. If the connections are good the sensor may have
been damaged by operation outside it's temperature range or mechanical causes.
Damaged sensors can not be repaired and must be replaced.
RTD Temperature Transmitters
InstallationAll Enercorp RTD temperature transmitters are unaffected by position, are reverse polarity protected and supplied with a two pole terminal strip.
Troubleshooting| Problem | Cause |
| No reading | 1. Lead wires
are reversed 2. No power to board - check voltage is between 13 and 30 VDC |
| Reading too low or too high | 1. RTD wires
shorted or RTD defective. Check that RTD resistance is about 100 ohms +
0.4 ohms/degree C above 0°C. 2. Check for correct transmitter range. 3. Check for condensation or mechanical damage to board. |
| Readings are erratic | Loose connection. Screw down all connections tightly. |
| Calibration
These transmitters have clearly marked zero and span pots. To calibrate connect a precision decade box to the RTD terminals. Since 1 degree Fahrenheit change is equal to a 0.2 ohm change you need a very accurate decade box to calibrate accurately. Insert a DVM set to mA in the 2-wire loop and apply power. With the decade box set to the scale beginning resistance from the table adjust the zero pot to obtain 4 mA. Change the resistance in the decade box to the scale end and adjust the span pot as necessary to obtain 20 mA. Go back and forth until the readings are stable. |
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Space Air Temperature Sensors - Ordering Data
| TS-S-V- | ( | sensor type | ) | - | ( | sensor value | ) |
| R = RTD | 100 = 100 ohms | ||||||
| T = Thermistor | 10K = 10k ohms | ||||||
e.g. TS-S-V-R-100 Space sensor in versatile enclosure with 100 ohm RTD
Space Air Temperature Sensors - Downloads
All files are
in PDF format and may be read with Adobe
Acrobat Reader
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