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testo Data Loggers Selection Guide

Data Loggers Product Selector Matrix




testo 174
testo 175-T
testo 175-H2
testo 175-S2
testo 177-T
testo 171
Instruments Internal temperature sensor External temperature probes Internal humidity sensor External humidity probes Other parameters Display Memory Protection Class
Mini temperature data logger
174 NTC - - - - Integral 3900 IP65
Compact data logger
175-T1 NTC - - - - Integral 7800 IP68
175-T2 NTC 1 x NTC - - - Integral 16000 IP68
175-T3 - 2 x Type T/K - - - Integral 16000 IP54
175-H1 NTC - - - - 3700  
175-H2 NTC - - - Integral 16000  
175-S1 - - - - V, mA - 16000  
175-S2 - - - - V, mA Integral 16000  
Compact data loggers for long-term measurements
177-T1 NTC - - - - - 48000 IP68
177-T2 NTC - - - - Integral 48000 IP68
177-T3 NTC 2 x NTC - - - Integral 48000 IP67
177-T4 - 4 x Type K/J/T - - - Integral 48000 IP43
177-H1 NTC 1 x NTC - - Integral 48000 IP54
Professional data logger in a robust metal housing
171-0 NTC - - - - Optional 55000 IP68
Ex 171-0 NTC - - - - Optional 55000 IP68
171-1 NTC 1 x NTC - - Optional 55000 IP65
171-4 - 4 x NTC - - - Optional 55000 IP65
171-8 - 4 x Type T/K - - - - 55000 IP42


testo 175-T Selection Guide
Temperature Data Logger Range


Product testo 175-T1
0563 1754		 testo 175-T2
0563 1755		 testo 175-T3
0563 1756
Sensor NTC NTC Type T or Type K
Display
Measuring range -35 to +70 °C -35 to +70 °C (int)
-40 to +120 °C (ext)		 -50 to +400 °C (Type T)
-50 to +1,000 °C (Type K)
Accuracy ±1 digit ±0.5 °C (-20 to +70 °C)
±1 °C (-35 to +20.1 °C)		 Internal:
±0.5 °C (-20 to +70 °C)
±1 °C (-35 to +20.1 °C)
External:
±0.3 °C (-25 to +70 °C)
±0.5 °C (remaining range)		 Type T: 0.7% of mv
(+70.1 to +1,000 °C)
±0.5 °C (-50 to +70 °C)
Type K: 0.7% of mv
(+70.1 to +1,000 °C)
±0.5 °C (-50 to +70 °C)
Resolution 0.1 °C (-20 to +70 °C)
0.3 °C (-35 to -20.1 °C)		 0.1 °C (-20 to +70 °C) (int)
0.1 °C (-25 to +70 °C) (ext)
0.3 ° (remaining range)		 0.1 °C
Memory 7,800 16,000 16,000
Battery life Up to 2.5 years Up to 2.5 years Up to 2.5 years
Protection class IP68 IP68 IP54


testo 175-H Selection Guide
Humidity / Temperature Data Logger Range


Product testo 175-H1
0563 1757		 testo 175-H2
0563 1758		 testo 177-H1
0563 1775
Sensor NTC and humidity
capacitive sensor		 NTC and humidity
capacitive sensor		 testo humid. sensor, cap.
NTC (internal) (external)
Measuring range -10 to +50 °C
0 to 100% rh		 -20 to +70 °C
0 to 100% rh		 0 to +100 %RH
-20 to +70 °C (int.)
-40 to +120 °C (ext.)
-40 to +70 °C td
Accuracy ±1 digit ± 0.5 °C
± 3% rh		 ± 0.5 °C
± 3% rh		 System
±2 %RH
±0.5 °C
Instrument
±0.2 °C (-25 to +70 °C)
±0.4 °C (remaining range)
Resolution 0.1 °C
0.1% rh		 0.1 °C
0.1% rh		 0.1 %RH
0.1 °C
0.1 °C
0.1 °C td
Memory 3,700 16,000 48,000
Battery life Up to 2.5 years Up to 2.5 years Up to 5 years
Protection class - - IP54


testo 175-S Selection Guide
Current / Voltage Data Logger Range


Product testo 175-S1
0563 1759		 testo 175-S2
0563 1761
Sensor Built-in screwed contact socket Built-in screwed contact socket
Display NO
Measuring range 0 to 1 V / 0 to 10 V
0 to 20 mA / 4 to 20 mA
Accuracy ±1 digit ±2 mV (0 to 1 V)
±20 mV (1 to 10 V)
±0.05 mA (0 to 20 mA)
±0.05 mA (4 to 20 mA)
Resolution 1 mV (0 to 1 mV)
10 mV (1 to 10 V)
0.01 mA (0 to 20 mA)
0.01 mA (4 to 20 mA)
Memory 16,000 16,000
Battery life Up to 2.5 years Up to 2.5 years


testo 177-T Selection Guide
Temperature Data Logger Range for Long-Term Monitoring


Product testo 177-T1
0563 1771		 testo 177-T2
0563 1772		 testo 177-T3
0563 1773		 testo 177-T4
0563 1774
Sensor NTC NTC NTC Type T or Type K
Display NO
Measuring range -40 to +70 °C -40 to +70 °C -40 to +70 °C (int)
-40 to +120 °C (ext)		 Type K: -200 to +1,000 °C
-Type T: -200 to +400 °C
Type J: -100 to +750 °C
Accuracy ±1 digit ±0.4 °C
(-25 to +70 °C)
±0.8 °C
(-40 to +25.1 °C)		 ±0.4 °C
(-25 to +70 °C)
±0.8 °C
(-40 to +25.1 °C)		 Internal: ±0.4 °C
(-25 to +70 °C)
±0.8 °C
(-40 to +25.1 °C)
External: ±0.2 °C
(-25 to +70 °C)
±0.4 °C
(remaining range)		 ±0.5% of mv
(+70.1 to +1,000 °C)
±1% of mv
(-200 to -100.1 °C)
±0.3 °C
(-100 to +70 °C)
Resolution 0.1 °C 0.1 °C 0.1 °C 0.1 °C
Memory 48,000 48,000 48,000 48,000
Battery life Up to 5 years Up to 5 years Up to 5 years Up to 5 years
Protection class IP68 IP68 IP68 IP43


testo 171 Selection Guide
Professional Data Loggers


Product testo 171-0
0577 1719		 Ex 171-0
0577 1730		 testo 171-4
0577 1714		 testo 171-1
0577 1715		 testo 171-8
0577 1718		 testo 171-2
0577 1712
Sensor NTC NTC NTC NTC (Temperature probe)
NTC (Combi-probe °C/%RH)		 Type K (NiCr-Ni)
Type T (Cu-CuNi)		 NTC
Measuring range -35 to +70 °C -35 to +70 °C -50 to +120 °C -50 to + 120 °C (ext.)
-35 to +70 °C (int.)
0 to +100 %RH		 -200 to 1000 °C Type K
-50 to +350 °C Type T		 0 to +100 %RH
-20 to +70 °C
-20 to +70 °C td
Accuracy ±1 digit ±0.5 °C
(-35 to +39.9°C)
±0.6 °C
(+40 to +70 °C)		 ±0.5 °C
(-35 to +39.9°C)
±0.6 °C
(+40 to +70 °C)		 ±0.2 °C
(-34.9 to +39.9°C)
±0.4 °C
(+40 to +120 °C)
±0.6 °C
(-50 to -35 °C)		 ±0.2 °C
(-35 to +39.9°C)
±0.4 °C
(+40 to +70 °C) (int.)
±0.2 °C (-34.9 to +39.9°C)
±0.4 °C
(+40 to +120 °C)
±0.6 °C (-50 to -35 °C) (ext.)
±2 %RH
(+2 to +98 %RH)		 ±(0.4 °C ±0.2% of mv) System
±2 %RH (+2 to +98 %RH)
±0.4 °C (-10 to +50 °C)
±0.5 °C (-20 to -10.1 °C)
±0.5 °C (+50.1 to +70 °C)
Resolution 0.1 °C 0.1 °C 0.1 °C 0.1 °C
0.1 %RH		 0.1 °C (-200 to +249.9 °C)
1 °C (+250 to +1000 °C) Type K
0.1 °C (-50 to +249.9 °C)
1 °C (+250 to +350 °C) Type T		 0.1 %RH
0.1 °C
Memory 55,000 55,000 55,000 55,000 55,000 55,000
Battery life Up to 5 years Up to 5 years Up to 5 years Up to 5 years Up to 5 years Up to 5 years
Protection class IP68 IP68 IP65 IP65 IP42 IP65
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