Product
Conductivity meter / controller type M3136
Minh Quan Technology Joint Stock Company
Hotline: 01692 114 683
Mr Que: 0973 852 363
Ms Ha: 0165 2197 433
Email: mqtekvietnam@gmail.com
Call usProduct information
- 2 alarm contacts
- temperature compensation to 120ºC
- commercially available conductivity cells with K-Factor 0.01, 0.1, 1.0 and 10 usable
- 4 digit LCD display, 15mm, color adjustable, optional: 5 digit
- programmable current or voltage output (optional), switchable for conductivity or temperature
- buttons to change the alarm contacts
- universal supply 20…253VAC or DC, galvanic isolated
- modbus (optional)
- USB – logger (optional)
- optical alarm contact
- rail mounting 35mm
Product Details
The M3136 conductivity meter is suitable for water, waste water or pure water conditioning in continuous or batch-type operating modes, for liquid chromatography or for general chemical process monitoring.
Temperature coefficient of the cell is compensated either manually or automatically by an external Pt-100 platinum probe within the range of 0°C to 120°C.
Commercially available conductivity cells -K-factor 0.01, 0.1 and 1.0 cover a dynamic range from 0.01µS to 20mS full scale. An internal synchronous rectifier eliminates the capacitive error currents induced by the cell cable.
Optionally, a galvanic isolated and in the range of 0…20mA programmable output signal for the conductivity signal or temperature is available. By a external 24V signal, the current output can be switched between conductivity- and temperature measuring.
Two floating limit or alarm contacts can be set over the entire range. Each is defined as a normally open or as a normally closed contact.
The conductivity meter M3136 uses a universal supply from 20 to 253VAC/DC.
Supply lines and all other lines, either from or to the conductivity meter, are protected by internal noise limiters against HF-noise.
Specifications
| Measuring ranges: | 0…2.000µS à (K = 0.1, K = 0.01)
0…20.00µS à (K = 10, K = 1.0, K = 0.1, K = 0.01) 0…200.0µS à (K = 10, K = 1.0, K = 0.1, K = 0.01) 0…2.000mS à (K = 10, K = 1.0, K = 0.1) 0…20.00mS à (K = 10, K = 1.0) 0…200.0mS à (K = 10) |
| Range display: | Displayed on easy to read LCD-Display |
| Display: | LCD-Display, 4-digit, 15mm height, color adjustable |
| Accuracy: | 0.5% |
| Reproducibility: | <0.2% |
| Measuring frequency: | from 80Hz to 10kHz |
| Measuring amplitude: | 70/150mV, conductive cell only |
| Step response: | Time between an conductivity change from 0% to 100% or reverse measured, between 10% and 90% = 4 seconds |
| Input protection: | Virtual zero, protected by diodes |
| Temperature compensation: | Manual from 0°C to 120°C, automatic by an external Pt-100 sensor, 2- or 3-wire connection. The unit calculates with 25°C when the Pt-100 sensor wires are broken. |
| Temperature slope: | 0.00%/°C (without compensation) to 8.00%/°C |
| Conductivity of water: | The conductivity of water is measured and compensated. |
| Reference temperature: | 25°C |
| Maximum length of cell cable: | Cable capacity is compensated automatically. The max. capacity must be |
| Alarm contacts:
Status: Hysteresis: Contacts rating: Max. contact load: Max. contact lifecycle: |
Two floating change-over contacts may be adjusted over the full range.
Each can be defined as normally open or normally closed contact in the menu via the keys. on easy to read LCD-Display Adjustable, factory settings is ±5 digit 1A with resistiv load / 230VAC 100’000 operations at max. load 10’000’000 operations mechanically, without load |
| Option current output:
Max. load: Output impedance: |
Programmable in the range of 0…20mA, galvanically isolated By an external 24V signal, the current output can be switched between conductivity- and temperature measuring. Conductivity measuring (terminal 14 & 15 open): Current output in depending of conductivity measuring Temperature measuring (terminal 14 = 0V, 15 = 24V): Current output in depending of temperature measuring
500Ω >1MΩ |
| Device settings: Change options: | Direct on the device, with push keys à see manual measuring ranges, cells K-factor, temperature slope, temperature, limit contacts: operating mode, hysteresis, status |
| Power supply: | 20 to 253VAC or DC |
| Power supply load: | 4.5W to 7.0W at 230VAC |
| CE-conformity: | Fulfilled |
| Terminals: | Plug-in screw terminals |
| Mounting: | 35mm mounting rail, EN50022-35 |
