DF9011 Precision Transient Speed Meter/Speed Monitoring Instrument

DF9011 Precision Transient Speed Meter/Speed Monitoring Instrument

1. Introduction

The instrument uses a microprocessor chip to process signals, with accurate measurement, stable performance, and the ability to expand functions according to user needs. This monitoring device has functions such as speed measurement, two-level alarm, overspeed protection, analog voltage and current output, sensor fault monitoring, alarm query, self check, etc. Suitable for monitoring and protecting rotating machinery in power, textile, petroleum, chemical and other units.

2. Main functions of the instrument

2.1 It has a speed measurement display function, with a maximum speed of 9999 revolutions per minute and a 5-digit digital display.

2.2 Alarm function: When the measured speed exceeds any alarm setting value, the corresponding alarm indicator light on the front panel will light up, and a switch signal will be output on the rear panel to protect the monitored equipment.

2.3 It is equipped with voltage and current output interfaces, which can be connected to devices such as computers.

2.4 Alarm values, number of teeth, and time can be set through the front panel buttons.

2.5 It has a storage function for overspeed events for future reference.

2.6 It has an indication function for sensor or input circuit faults.

2.7 Equipped with self checking function

3. Technical Parameters

3.1 Measurement range: 1 to 9999 revolutions per minute.

3.2 Accuracy: ± 0.02% × n (n is the displayed value r/min of the instrument) ± 1 word.

3.3 Input signal: sine wave or square wave pulse input, input voltage effective value 0.3-20V,

Can be used in conjunction with S-CZ reluctance sensors or S-HC gear speed sensors.

3.4 Relay output contact voltage/current: AC220V/3A, DC28V/3A.

3.5 Output Interface: Output proportional to the full-scale range of the speed monitoring instrument (0-99999r/min)

Current: 4-20mA, load ≤ 500 Ω

Voltage: 1-5VDC, load ≥ 5K Ω

3.6 Working environment: A. Temperature: 0~+60 ℃

B. Relative humidity: ≤ 80%

C. There is no strong magnetic field interference around

D. There is no corrosive gas present around

3.7 Working power supply: AC220V ± 10% 50Hz ± 5% Power consumption ≤ 20W

3.8 Self check frequency: 2800 ± 100Hz (at room temperature)

3.9 Appearance: 160 × 80 × 80mm

3.10 Hole: 154 × 76mm

DF9011 Precision Transient Speed Meter/Speed Monitoring Instrument

Product Name: Intelligent Speed Monitoring Instrument
Product model: HN-6
Product Description:

Sudden increase in rotational speed of rotating machinery is one of the dangerous situations that may have catastrophic consequences. The measurement of speed increase and decrease during unit start-up and shutdown, as well as how to quickly pass the critical speed, are extremely important. This intelligent speed monitoring device can be equipped with reluctance speed sensors, eddy current sensors, and Hall speed sensors. Equipped with alarm and parking relay, it can monitor and protect the machine in a timely manner, and has a transmission output for easy access to the control system. This product is mainly suitable for monitoring and protecting the rotational speed of rotating machinery in industrial sectors such as power, petroleum, and chemical.

Functional Description
Realize intelligent processing: Alarm value, danger value, number of teeth, and range value can be set arbitrarily through panel buttons
The alarm delay adjustment range is 0.1~6 seconds to prevent false alarms caused by on-site interference
There is a current output terminal on the rear board that is proportional to the conversion value for recording output

technical indicators
External power supply: 220VAC ± 10% 50Hz
Input
Signal: Reluctance speed sensor, eddy current sensor, Hall speed sensor
Input impedance:>10K Ω
Range: 1~99999rpm
Display mode: Five digit 0.8-inch LED digital display
Display accuracy: ± 1 rpm
Phototube LED indication: machine on-site operation status

Number of teeth: Any from 1 to 255
Current output: 4-20mA active, output load ≤ 500 Ω
Alarm point range: 0-100% full range
Relay sealing: epoxy resin, node capacity: 7A/240VAC, normally open contacts
Temperature range
Running time: 0 ℃~+65 ℃ Storage time: -30 ℃~+80 ℃
Relative humidity: up to 95%, non condensing
Dimensions: 160 × 80 × 160mm
Hole size: 152+1 × 74+1 mm