Technical specifications

Measurement technology

pH electrode
with additional reference pH electrode in pH7 buffer solution

Measurement principle

Potentiometry

Parameters

pH value, temperature

Measurement range

pH

0...14 pH

Temperature

0...+65 °C

~ +32 to +149 °F

Resolution

pH

0.01 pH

Temperature

0,1 °C

~ +32.2 °F

Measurement accuracy

pH

± 0.06 pH

Temperature

± 0.5 °C

± +32.9 °F

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-term drift 24 h

≤ 0.03 pH

Long-term 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

Table: *with 0.5 m cable

Housing material

PPS / PET / NBR / PVDF / ceramic junction / Viton o-ring / titanium ground electrode / pH glass

Dimensions (L x Ø)

~ 242 x 32 mm

~ 9.5˝ x 1.3˝

Weight*

260 g

~ 0.57 lbs

Interface

RS-485, Modbus RTU

Power consumption

0.2 W

Power supply

12 - 24 VDC (± 10 %)

Connection

8pin M12 plug

Sensor cable

0.5 m, 2 m and 10 m

Maintenance effort

≤ 0.5 h/month typical

Calibration /
maintenance interval

4 weeks typical

System compatibility

Modbus RTU

Warranty

1 year (EU & USA 2 years) on electronics; wearing parts are excluded from the warranty

Max.
pressure

with fixed cable

3 bar

~ 43.5 psi

in FlowCell

1 bar, 2...4 L/min

~ 14.5 psi, 0.5 to 1 gpm

Degree of protection

IP68

Sample temperature

+2...+40 °C

~ +36 to +104 °F

Ambient temperature

-5...+55 °C

~ +23 to +131 °F

Storage temperature

0...+40 °C*

~ +32 to +104 °F

Inflow velocity

0...3 m/s

~ 0 to 10 fps

Recommendation from TriOS: Storage at +5...+15 °C (+41 to +59 °F) for longer shelf life