Đo pH

Specifications:

1- pH transmiter

- pH sensing range 0-14 ph

- Power supply voltage 7 to 36 vdc

- Output Current 4 to 20 ma, true 2-wire

- Isolation 600 vdc, >70 db at 50/60 hz
+ Linearity ± 0.004 ph
+ Accuracy ± 0.014 ph (after calibration)
+ Sensitivity ± 0.01 ph
+ Stability ± 0.03 ph
+ Repeatability ± 0.01 ph

- Electrode type glass, Teflon double junction
Response time (including electrodes) 95% < 5 seconds
Temperature compensation automatic, 0-50 C
Pressure 0-100 psi
Humidity 0-100%
Wetted materials 316 ss, PVDF or Delrin, Viton,
glass, titanium optional

- Length 362 mm (14.25 in.)
- Diameter 19 mm (0.750 in.) maximum

-Weight :  (excluding cable) < 0.22 kg (0.5 lb.)  Cable type Removeable, shielded

polyurethane, Kevlar  1.36 kg/100 feet,  Cable length ( ) 7.6 meters (25 feet)

- Cable from transmitter to power supply 4 conductor, twisted pair, 3 mile maximum

2- Temperature transmiter

Range 0-50 C
Output Current 4 to 20 ma, true 2-wire
Linearity ± 0.5 C
Accuracy ± 1 C
Power supply voltage 7 to 36 vdc

Isolation 600 vdc, >70 db at 50/60 hz

Cable from transmitter to power supply 4 conductor, twisted pair, 3 mile maximum