TESTO 400 Quick Start Guide

0973 4011 06 – 01.2024
1 2 3 LED status
4 5 6
210 x 95 x 39 mm
8.3 x 3.7 x 1.5 in
-20…+60 °C
-4…+140 °F
-5…+45 °C
+23…+113 °F
Rechargeable
Li-Ion battery
(5550 mAh)
T (NTC):
0,1 °C / 0.1 °F
T (TE):
0,1 °C / 0.1 °F
Δp:
0,001 hPa /
0.001 InH
2
O
p:
0,1 hPa /
0.1 InH
2
O
T (NTC):
-40 ... +150 °C /
-40 ... +302 °F
T (TE):
-200 ... +1370 °C /
-328 ... +2498 °F
Δp:
0 ... +200 hPa /
0 ... +80 InH
2
O
p:
+700 ... +1100 hPa /
+280 ... +440 InH
2
O
T (NTC):
±0,2 °C ±1 digit (-25 ... +74,9 °C) /
±0.4 °F ±1 digit (-13° ... +166.8 °F)
±0,4 °C ±1 digit (-40 ... -25,1 °C) /
±0.7 °F ±1 digit (-40° ... -13.2 °F)
±0,4 °C ±1 digit (+75 ... +99,9 °C) /
±0.7 °F ±1 digit (+167° ... +211.8 °F)
±0.5 % of mv ±1 digit (remaining range)
T (TE):
±(0,3 °C + 0,1 % of mv) ±1 digit /
±(0.5 °F + 0.1 % of mv) ±1 digit
Δp:
±(0,3 Pa + 1 % of mv) ±1 digit (0 ... 25 hPa) /
±(0.0 InH
2
O + 1 % of mv) ±1 digit (0 ... 25 InH
2
O)
±(0,1 hPa + 1,5 % of mv) ±1 digit (25001 ... 200 hPa) /
±(0.0 InH
2
O + 1.5 % of mv) ±1 digit (10000 ... 80 InH
2
O)
p: ±3 hPa / ±1 InH
2
O
testo 400
0440 4000
min. 3 sec.
OFF
ON
RESET
https://www.testo.com/software/datacontrol
https://www.testo.com/manuals

TESTO 400 Specifications

General

Protection Class	IP40
Humidity Measurement Range	0 to 100 %RH
Memory	Internal memory for data storage
Connectivity	USB, Bluetooth
Power Supply	Rechargeable battery
Storage Temperature	-20 to 60 °C
Battery Life	Up to 10 hours
Measurement Parameters	CO, CO2, O2, NO, NO2, SO2, H2S, Temperature, Humidity, Differential Pressure, Flow
O2 Measurement Range	0 to 21 vol.%
SO2 Measurement Range	0 to 5000 ppm