Model 3900 and 3900VP General Purpose pH Sensors
- ENHANCED PERFORMANCE AND INCREASED LIFE with minimized glass cracking provided by field-proven AccuGlass™ pH glass formulations.
- NEW 3⁄4'' AND 1'' MOUNTING SOLUTIONS to meet a variety of application installation requirements.
- EXTENDED SENSOR LIFE provided by double junction reference.
- MAXIMUM CHEMICAL RESISTANCE provided by rugged polyphenylene sulfide body, completely sealed to eliminate sensor leakage.
- OPTIMUM VERSATILITY WITH VARIOUS MOUNTING OPTIONS provided by one-piece construction with process threads in two places.
- OPERATES IN SUB-ZERO TEMPERATURES down to -10°C (14°F) and up to a maximum of 100°C.
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The double junction reference aids in the sensor’s resistance to harsh environments and helps prolong sensor life. Models 3900 and 3900VP are provided with a double junction reference, which protects the reference element from poisoning ions – such as ammonia, chlorine, cyanides, and sulfides – in the process. Both models are made with porous Teflon® junction positioned near the pH/ORP-sensitive membrane.
The AccuGLASS™ pH glass formulations exceed industry standards. The AccuGlass™ pH glass is a result of many years of glass research resulting in a formulation which has been found to increase the life of the sensor. Unlike other pH glasses presently on the market, this glass resists cracking especially at higher temperatures and reduces sodium ion error commonly found in high pH applications. Overall, the AccuGlass™ formulation enhances the sensor performance to measure pH more accurately and have a longer sensor life than ever before.
Sensor Type: General purpose 3900
Measured Range: pH: ACCUGLASS™ 0-14
ORP: -1500 to +1500 mV
Operating Temperature: -10° to 100°C (14° to 212°F) Automatic temperature compensation -10° to 100°C (14° to 212°F)
Maximum Pressure: 790 kPa [abs] (100 psig) at 100°C (212°F)
Materials of Construction: stainless steel, glass, Teflon®, polyphenylene sulfide (PPS), EPDM and silicone
Materials of ORP: Platinum
Process Connections: Front facing: 3⁄4˝ and 1˝ MNPT and Rear facing: 1˝ MNPT
Integral Cable: 32 ft (10m) cable with integral SMART preamp; 15 ft (4.7m) cable without preamp sensor
VP8 Cable: use 24281-XX, 2.5 ft (.8m) to 100 ft (31m)
Weight/Shipping Weight: 0.45 kg/0.9 kg (1 lb/2 lb) |
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