Datasheet
testo 440
Other digital probes and probe accessories
Probe type Measuring
range
Accuracy Resolution Order no.
Digital humidity probes
Humidity/temperature probe with
Bluetooth
Ø 12
mm
290 mm
0 to 100% RH
-20 to +70°C
±2% RH (5 to 90% RH)
±0.5°C
0.1%RH
0.1°C
0636 9731
Humidity/temperature probe, fixed
cable
Ø 12
mm
290 mm
0636 9732
Humidity/temperature probe head
Ø 12
mm
140 mm
0636 9730
High-precision humidity/temperature
probe with Bluetooth
Ø 12
mm
290 mm
0 to 100% RH
-20 to +70°C
±(0.6% RH + 0.7% of m.v.)
(0 to 90% RH)
±(1.0%RH + 0.7% of m.v.)
(90 to 100% RH)
±0.3°C
(15 to 30°C)
±0.5°C
(remaining meas. range)
0.01% RH
0.1°C
0636 9771
High-precision humidity/temperature
probe, fixed cable
Ø 12
mm
290 mm
0636 9772
High-precision humidity/temperature
probe head
2)
Ø 12
mm
140 mm
0636 9770
Robust humidity/temperature probe
for temperatures up to +180°C,
fixed cable
270 mm
Ø12mm
0 to 100% RH
-20 to +180°C
±3% RH (0 to 2% RH)
±2% RH (2.1 to 98% RH)
±3% RH (98.1 to 100% RH)
±0.5°C (-20 to 0°C)
±0.4°C (0.1 to +50°C)
±0.5°C (+50.1 to +180°C)
0.1%RH
0.1°C
0636 9775
Digital comfort probes
Turbulence probe, fixed cable
190 mm
0 to +5 m/s
0 to +50°C
±(0.03 m/s + 4% of m.v.)
(0 to 5 m/s)
±0.5°C
0.01 m/s
0.1°C
0628 0152
Lux probe, fixed cable
55mm
110mm
0 to 100,000 lux DIN EN 13032-1 Appendix B
Class C according to
DIN 5032-7
0.1 lux
(< 10,000 lux)
1 lux
(≥ 10,000 lux)
0635 0551
CO
2
probe with Bluetooth, incl.
temperature and humidity sensor
30
mm
280mm
0 to 10,000
ppm CO
2
5 to +95%RH
0 to +50°C
±(50 ppm + 3% of m.v.)
(0 to 5000 ppm)
±(100 ppm + 5% of m.v.)
(5001 to 10,000 ppm)
±3% RH (10 to 35% RH)
±2% RH (35 to 65% RH)
±3% RH (65 to 90% RH)
±5% RH (remaining meas.
range)
±0.5°C
1ppm
0.1%RH
0.1°C
0632 1551
CO
2
probe, fixed cable, incl.
temperature and humidity sensor
30
mm
280mm
0632 1552
CO₂ probe head, incl.temperature
and humidity sensor
30
mm
130 mm
2)
0632 1550
CO probe with Bluetooth
30
mm
200mm
0 to 500 ppm
±3 ppm (0 to 30 ppm)
±10% of m.v.
(30.1 to 500 ppm)
0.1ppm
0632 1271
CO probe, fixed cable
30
mm
200mm
0632 1272
CO probe head
30
mm
2)
30mm
0632 1270
Probe handle and adapter
Cable handle for connecting
testo440 probe heads
0554 2222
Bluetooth handle for connecting
testo440 probe heads
0554 1111
Handle adapter for connecting
testo440 flow probes
0554 2160
2)
For use with cable handle (order no. 0554 2222)
or Bluetooth handle (order no. 0554 1111).










