Temperature Transmitters
TEMPERATURE TRANSMITTER SWITCH WITH DISPLAY
TT 22SD
TT-22SD Temperature Transmitter with Switch is a compact industrial instrument designed for accurate temperature measurement of liquids and gases. It accepts RTD PT-100 input and transmits the measured temperature as a 4–20 mA DC analogue output along with a PNP alarm switching output. The device supports a measuring range of –50°C to 150°C with high accuracy and fast response time of less than 1 second. A bright 4-digit, 7-segment LED display provides clear on-line temperature indication. Built with SS-316 wetted parts, IP-67 weatherproof enclosure, and direct line mounting, it ensures reliable operation in harsh industrial environments. The TT-22SD is ideal for temperature monitoring, control, and protection applications in process industries.
Configure the transmitter and electronics based on application, environment, and compliance requirements.
Performance Characteristics
|
Sensor Type |
RTD PT 100 |
|
Probe length |
Up to 25mm |
|
Up to 100mm |
|
|
Up to 300mm |
|
|
Up to 1000mm |
|
|
Media |
Liquids, Gases |
|
Medium
temperature |
-50°C to 150°C |
|
Pressure rating |
300 Bar |
|
Medium temperature for Liquids |
-50°C to 150°C |
|
Medium temperature for Gases |
-50°C to 150°C |
|
Power Supply |
18 to 32V DC |
|
Input |
RTD PT 100 |
|
Output 1 |
PNP Alarm output
(Max. load 100mA) |
|
Output 2 |
4 to 20 mA DC (Max. load
600 Ω) |
|
Accuracy |
Switch point accuracy (°C): ± 0.3 + (± 0.1%
M.V.) |
|
Precision analogue output
(°C): ± 0.3 + (± 0.1% M.V.) |
|
|
Display accuracy (°C): ± 0.3 + (± 0.1%
M.V.) |
|
|
Display |
4-digit 7-segment LED
Display |
|
Resolution of display (°C) |
0.1 |
|
Response Time |
<1 Sec. |
|
Ambient Conditions |
Temperature: -20
to 70°C / Humidity: 5 to 95% non condensing |
|
Storage Conditions |
Temperature: -20 to 75°C |
|
Insulation Resistance |
>100 MΩ at 100VDC |
|
Span / Zero Adjustments |
Programmable Software Calibration |
|
Process Connection |
1) Threaded 1/4” NPT |
|
2)
Threaded 1/2” NPT |
|
|
3)
Threaded 1/4” BSP |
|
|
4)
Threaded 1/2” BSP |
|
|
Electrical Connection |
4 Pin M12 Male (pin 1:+VDC,
Pin2:Output2, Pin3:0VDC, Pin4:Output1) |
|
Mounting |
Direct Line mount
(Vertical) |
|
Material of Construction |
All wetted parts
SS 316 (Options available on request) |
|
Enclosure |
SS316 / ABS Plastic / Die Cast Aluminium |
|
Ingress Protection |
IP 67 |
|
Area Classification |
Field Mount Weather
Proof |
|
Weight |
0.6 kg (Approximate) |
Download the complete product catalogue for detailed specifications, dimensions, certifications, and application guidance.
Electronet instruments are widely deployed across multiple industries and utilities for reliable monitoring and control of critical process parameters.
| Industry | Key Applications (TT 22SD) |
| Chemical / Process / Pharmaceutical Industry | Simultaneous 4–20 mA temperature transmission and emergency over-temperature trip contacts for reaction vessel heating mantles, solvent distillation condensers, and cleanroom sterilizers. |
| Fertilizer Industry | Continuous temperature telemetry and hardware safety shutoff relays on bulk fertilizer rotary drying drums, ammonia transfer pump bearing housings, and acid dilution coolers. |
| Water and Wastewater Treatment Industry | Sludge digester recirculating heating loop control, discharge water thermal monitoring, and direct overheat trip cutoffs on high-power intake pump drive bearings. |
| Food Industry / Dairy and Milk | Continuous process temperature feedback with automated flow diversion valve switching on HTST milk pasteurizers, CIP hot chemical wash tanks, and cooking kettles. |
| Automation Industry / Manufacturing Industry | Dual-action temperature feedback and safety limit switching on hydraulic power pack reservoirs, high-speed machine tool spindle cooling systems, and automated paint baking ovens. |
| Oil and Gas Industry / Petrochemical Industry | Thermal telemetry paired with high-temperature trip relays on crude oil heat exchangers, gas compressor cylinder heads, lube oil consoles, and pipeline fuel preheaters. |
| Nuclear Power Generation Industry / Power Industry | Auxiliary steam header temperature tracking, condenser hotwell monitoring, and high-temperature trip protection on boiler feedwater pump motor bearings and turbine lube oil circuits. |
| Steel Industry / Cement Industry | Critical temperature monitoring with hardwired emergency interlocks on rolling mill bearing oil recirculators, blast furnace cooling water headers, and cement clinker cooler air ducts. |
| Textile Industry | Process temperature control and over-temperature safety cutoffs on yarn steaming chambers, fabric dye vats (kiers), washing liquor preheaters, and stenter curing frames. |
| HVAC Industry / FMCG Industry |
Core capabilities and advantages of the product.
