testo 6743 – dew point transmitter with display
For efficient moisture measurement in compressed air or dry air or dry gas
- Reliable dew point measurement in the range -45 °Ctd to + 30 °Ctd
- Testo's highly accurate and long-term stable moisture sensor
- Documented precision adjustment at -40°C tpd
20 100
testo 6743 is used for effective moisture measurement in compressed or dry air or dry gas. The instrument can be used to monitor moisture levels or control drying equipment.
Wherever compressed air, air or gases are used in industry, excessive humidity can cause damage or impair product quality. You can use the dew point transmitter testo 6743 to track the humidity in your systems (e.g. in membrane and adsorption dryers). Prevent damage and reduce costs through targeted use of measurement and control technologies.
- Reliable dew point measurement in the range -45 °Ctd to + 30 °Ctd
- Testo's highly accurate and long-term stable moisture sensor
- Documented precision adjustment at -40°C tpd
- Freely scalable analog output (4 to 20mA) and optional 2 relay outputs.
- With informative display
Included in delivery
testo 6743 dew point transmitter with display
| Measurement range | -60 ... +30°Ctd ±0 ... +50°C |
| Operating temperature | -20 ... +70°C ambient temp. -40 ... +80°C storage temperature |
| Pressure load | -1 .... 50 bar |
| Moisture sensor | Testo's moisture sensor with precision adjustment at -40°C tpd |
| Temperature sensor | NTC |
| Sensor protection | Cover of stainless sintered steel |
| Measurement uncertainty - Moisture | ±1 K at -10°Ctpd ±4 K at -40°Ctpd |
| Measurement uncertainty - Temperature | ±0.5°K |
| Analog output signal | 4 ... 20mA, 2-wire technology |
| Scaling | Stepless scaling via display/buttons standard 4 ... 20mA = -60 ... 30°Ctpd |
| Output variables | °Ctpd, °Ftpd, °Ctd, °Ftd, %RH, ppmV, mg/m3, °C, °F |
| Accuracy | ±0.040 µA |
| Power supply | 24 VDC (10 ... 30 VDC) With alarm output. 20 ... 30VDC Max load: 10 VDC: 100 ohms, 30 VDC: 950 ohms |
| Protection class | IP 65 The housing can be rotated 350° (for aligning the display) |
| Instrument housing Dimensions | 199.5x37x37mm with standard connector 203.5x37x37 mm with alarm output contact |
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Measuring chamber
2 990 SKU 0554 3303Measuring chamber providing an optimal flow to the humidity sensor (standard quick coupling for compressed air / G1/2").
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Cable contact
4 095 SKU 0554 3302Cable connector for power supply/analog output signal 4 ... 20mA, with 2 voltage-free contacts (NO) and LED (limit value output, alarm output).
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Power supplies for Hygrotest
2 590 SKU 0554 1748Power supply 220 V - 24 V DC, for Hygrotest. Input: 110 ... 240 VDC. Output: 24 VDC/350 mA.
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Power supply unit (DIN rail mounting)
3 150 SKU 0554 1749Mesh thread for DIN rail. Input: 85 ... 264 VAC | 110 ... 300 VDC. Output: 24 VDC/2.5 A.
Similar products
testo 6741 – dew point transmitter without display
Reliable dew point measurement.
- Documented precision adjustment at -40°C tpd
- 4 ... 20 mA with two-wire technology
- Process connection G1/2
