YZHB intrinsic safety vibration transducer integrates magnetoelectric velocity transducer and precision
measurement circuit to realize the functions of traditional vibration measurement system defined by the model
“sensor+ transducer”. It is suitable to construct an economical high-precision vibration measurement system. The
transducer can be directly connected with DCS, PLC or other systems. It functions as an ideal equipment for
measuring the vibration of fan and pump.
The reliable intrinsic safety design enables YZHB intrinsic safety vibration transducer to operate in the flammable
and explosive environments. The intrinsic safety is rated as Exia II CT6. To meet the needs of measurement, we
provide three-wire system, two-wire system, vibration speed, vibration displacement and the transducer with
multiple measuring ranges. According to the requirements on operating environment and installation, we supply
three kinds of basic models and mounting threads of various specifications.
Technical parameters
External power source (Vs): Three-wire system +18~30VDC
Two-wire current loop + 10~30VDC
free connections of positive and
negative poles
Measuring range: displacement: (0~500) um (peak—peak value)
Speed: (0~0.0) mm/s (T-RMS)
Load: three-wire system: ≤500Ώ; two-wire system: RL=50X (Vs-10) Ώ
Output: (4-20)mA
Frequency response speed: (2~2000)Hz; displacement: (4~2000) Hz;
Working temperature: -30oC~+70oC
Storage temperature: -35oC~ +100oC
Relative humidity: 95% condensed
Normal working environment: no strong magnetic field, no corrosive gas and liquid, no strong vibration source
Hazard environment: IIA---IIC, hazard places: areas 0, 1 and 2 of T6 explosive gas mixture
Explosive-proof grade: Exia II CT6
Exterior shell protection grade: IP20~IP 65
Insulation resistance: > 500MΏ
Insulation strength: > 500Vrms
Amplitude linear error: +1%
Ordering guide
Note: the default option marked by “*” is recommended if a user has no particular requirement.
Order code: YZHB-A□-B□-C□-D□-E□-F□-G□
Measuring range: A □ (Note: 1~3: vibration displacement; 4~6 vibration strength)
1 :(0~100 )μm;
2*: (0~200) μm;
3 : (0~500) μm;
4: (0~10.0) mm/s
5*: (0~20.0)mm/s
6 :(0~50.0) mm/s
Output mode: B□
1*: Two-wire system current loop;
2 : Three-wire system
Model structure: C □
1*: small size
2: highly protective
3: equipped with display unit
-1-
YZHB intrinsic safety vibration transducer
Mounting thread: D □
Highly protective:
1: 1/4 “NPT;
2*: 1/2” NPT;
Small size and with display unit:
3: 3/8—24UNF
4: 1/2—20UNF
5*: M10X1
6: designated by the user;
Safety certification: E □
1*: No safety certification
2 : Horizontal installation
Frequency response: G □
1*: speed: (10~2000) Hz; displacement: (10~2000) Hz;
2 : speed: (2~30)Hz; displacement: (4~300)Hz;
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