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Counters & Timers: Your Technology Partner

The document describes an ERM-3770 digital tachometer that can measure frequency, period, speed, and flow rate. It has a 4-digit display, accepts NPN or PNP sensor inputs from 0.07Hz to 10,000Hz, and provides adjustable decimal points, sampling rates, and output relay or SSR driver. It is powered by 230Vac, 115Vac, 24Vac, or 24Vdc and has IP65 front protection with operating temperature of 0-50°C.

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Taz Uddin
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51 views1 page

Counters & Timers: Your Technology Partner

The document describes an ERM-3770 digital tachometer that can measure frequency, period, speed, and flow rate. It has a 4-digit display, accepts NPN or PNP sensor inputs from 0.07Hz to 10,000Hz, and provides adjustable decimal points, sampling rates, and output relay or SSR driver. It is powered by 230Vac, 115Vac, 24Vac, or 24Vdc and has IP65 front protection with operating temperature of 0-50°C.

Uploaded by

Taz Uddin
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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- 4 Digits Display

- NPN or PNP input type


- Working with Process Set and Alarm Set value
- Alarm output / Relay or SSR driver output and Alarm Set value boundary
- Adjustable decimal point
- Division rate
- 0,07Hz to 10000Hz input signal
- Automatic sampling (1 sec. to 16 sec.)
Applications:
- Period measurement
- Frequency measurement
- Band speed measurement
- Linear or circular movement
- Instantaneous flow rate
Supply Voltage
230Vac (+/-15%) 50/60 Hz -1.5VA
115Vac (+/-15%) 50/60 Hz -1.5VA
24Vac (+/-15%) 50/60 Hz -1.5VA
24Vac / 24Vdc (+/-15%) 50/60 Hz -1.5VA
Environmental Rating and Physical Specification
Operating Temperature: 0...50 C
Humidity: 0-90%RH (non consending)
Protective Class: IP65 at front, IP20 at rear
Dimension: 77x35mm, Depth:62.5mm.
Specification
Input
Sensor Input: Pulse between 5Vdc to 30Vdc
Sensor Input Type and Maximum Frequency:
- NPN or PNP type sensor
- Between 0.07 Hz to 10000 Hz frequency measuring .
Sampling Time: Sampling time automatically adjusting minimum
1 second and maximum 16 second according to input frequency
Output
Sensor Supply Output: 12Vdc, maximum 50mA
Alarm Output: Relay output (5A@250Vac Resistive Load)
(It must to power supply in order)
Digital Tachometer
Your Technology Partner
Counters & Timers
21
12Vdc
max. 50mA
Sensor
Supply
Supply Voltage
230Vac, 115Vac
24Vac/Vdc
PNP / NPN
Sensor Input
(0,07Hz - 10KHz)
Relay Output
5A@250Vac
(at resistive load)
ERM-3770

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