TpH-D - TriOS Mess- und Datentechnik

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TpH-D

Digital differential pH-sensor.
Robust digital differential pH sensor for operation on TriBox controllers and HS100 DIN rail module. The closed design ensures separation of the pH electrode reference system from the medium to be measured, thus excluding electrode poisoning. A dirt-resistant salt bridge minimizes cleaning efforts and prevents dilution of electrolytes. The sensor therefore achieves an extremely long service life even in heavily contaminated media. TpH-D is available with a 10 m, 2 m or a 0,5 m fixed cable.
Measurement technology
pH electrode with additional reference pH electrode in
pH7 buffer solution
Measurement principle
Potentiometry

Parameters
pH value, temperature
pH measuring range
0...14 pH
Resolution
0.01 pH
Measurement accuracy
± 0,06 pH
Intrinsic error
pH1
± 0.05 pH
pH7
± 0.05 pH
pH13
± 0.35 pH
Linearity measurement error
± 0.1 pH
Repeatability
pH1
± 0.1 pH
pH7
± 0.05 pH
pH13
± 0.1 pH
Output signal fluctuation
pH7
± 0.025 pH
pH4
± 0.05 pH
Warm-up time
< 5 min
Drift
Short time drift 24 h
< 0,03 pH
Long time drift 1 week
< 0,05 pH
10% time and
90% time
T10 ascending
< 2 s
T10 falling
< 2 s
T90 ascending
≤ 5 s
T90 falling
≤ 5 s
Temperature compensation
Pt1000
Measurement interval
2 s

Housing material
PPS / PET / NBR
Dimensions (L x Ø)
~ 225 x 32 mm
~ 8.9˝ x 1.3˝
Weight
180 g
~ 0.4 lbs

Interface
RS-485, Modbus RTU
Power consumption
0.2 W
Power supply
12...24 VDC (± 10 %)
Connector
8-pin M12-plug
Sensor cable
2 m and 10 m

Maintenance effort
Typically ≤ 0.5 h/month
Calibration/maintenance interval
Typically 4 weeks
System compatibility
Modbus RTU
Warranty
1 year (EU & US: 2 years) on electronics; wearing parts are excluded
from the warranty

Max. pressure
3 bar
~ 43.5 psig
Protection type
IP68
NEMA 6P

Sample temperature
+2...+40 °C
~ +36 °F to +104 °F
Ambient temperature
-5...+55 °C
~ +23 °F to +131 °F
Storage temperature
0... +80 °C
~ +32 °F to +176 °F
Inflow velocity
0...3 m/second
~ 0...10 fps

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