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MQI 99: example of system with control unit and separate flanged or a special sensor
Merits
- efficient control unit for many aplications
- plastic (lower price) cover of control unit, resistant cover of sensor
Field of application
- water service
- engineering
- energetics
- food industry
- agriculture
Technical data of control unit
| MQI 99 | |
|---|---|
| Electric conductivity of medium | ≥5 µS/cm, for demineralized water ≥20 µS/cm |
| Input resistance | ≥10·10 Ohms |
| Accuracy of measurement | 0,3 % of measured value in range of 10 ÷ 100 % Qmax |
| Filtration of measurement | adjustable in multiple modes |
| Elimination of small flows | adjustable by 0,1 % |
| Direction of flows | Bi-directional measuring indicated by the sign |
| Zero flow | automatic zero point setting |
| Data recording | flow volume archiving, even during power supply failure |
| Statistics | 5 minutes - hourly - daily - monthly for 4 months |
| Real time | clock with calendar inc. leap years until 2099 |
| Values displaying | alphanumeric LCD, 2 × 16 characters, with backlight |
| Control | keypad with four buttons |
| Programmable functions | detection of empty pipe |
| Analog output (active) | galvanically separated 4 (0) ÷ 20 mA, (0 ÷ 30 mA) / 300 Ohms |
| Impulse output (1× relay) | flow volume (x·m³) per impulse |
| Binary output (3× relay) | to order (non-inductive load) 30 V/2 A/DC^125 V/0,5 A/AC |
| Frequency output (open collector) | to order nominal rating of 1 kHz/TTL |
| Communication output (data) | to order RS 232 C / RS 485, selectable speed, protocol ELA |
| Power supply | 85 - 260 VAC 50 / 60 Hz, 24 VDC, to order 9 - 36 VDC +10% / -15%, 10 VA |
| Enclosure | IP 65 (NEMA 3) |
| Ambient temperature | −20 °C to +50 °C |
| Dimensions (height × width × depth) | 210 × 160 × 115 mm |
| Material of case | plastics = ABS |
| Weight | 2,0 kg |
| Cable terminals | 3 pcs PG 11 (to order + 2x PG 11) |
practical assembly
basic dimensions
Technical data of flange sensors
| Flange sensor variants | design 1 | design 2 | design 3 |
|---|---|---|---|
| Control principle | DC pulse | ||
| Connecting cable | standard 8 m, to order of 16, 24, 32, 40, 48 m, cable can not be extended without consultation with producer | ||
| Construction | completely welded carbon steel | ||
| Inner diameter | DN 10 ÷ 1000 | ||
| Mounting connection | flange DIN, ANSI, BS | ||
| Enclosure | IP 67 / NEMA 5 (IP 68 / NEMA 6) | ||
| Measuring tube material | stainless steel | ||
| Sensor cover material | carbon (stainless) steel, surface finish STANDARD acrylic metal-multicomponent paint | ||
| Flange material | carbon (stainless) steel | ||
| Ground rings | DN 10 ÷ DN 40 to order for installation in plastic pipe | ||
| Sensing electrode material | stainless steel (titanium, hastelloy, platinum) | ||
| Lining material | hard rubber | soft rubber | teflon PTFE |
| Maximum temperature of medium * | 90 °C | 90 °C | 130 °C |
| Standard pressure load Pressure range ** |
1,6 MPa 0,6 / 1,0 / 2,5 / 4,0 MPa |
1,6 MPa 0,6 / 1,0 / 2,5 / 4,0 MPa |
1,6 MPa 0,6 / 1,0 / 2,5 MPa |
* Maximum temperature of measured medium consult with producer
** Construction of sensor and type of flange depends on the maximum
desired pressure of medium
Possible color variants of flange sensors
STANDARD
to order
to order
practical assembly
Technical data of special sensors
| Special sensor variants | design 1 | design 2 | design 3 |
|---|---|---|---|
| Control principle | DC pulse | ||
| Connecting cable | standard 8 m, to order of 16, 24, 32, 40, 48 m, cable can not be extended without consultation with producer | ||
| Construction | completely welded carbon steel | ||
| Inner diameter | DN 10 ÷ 1000 | ||
| Mounting connection | to order special connection , without flange | ||
| Enclosure | IP 67 / NEMA 5 (IP 68 / NEMA 6) | ||
| Measuring tube material | stainless steel | ||
| Sensor cover material | carbon (stainless) steel | ||
| Flange material | to order | ||
| Ground rings | DN 10 ÷ DN 40 to order for installation in plastic pipe | ||
| Sensing electrode material | stainless steel (titanium, hastelloy, platinum) | ||
| Lining material | hard rubber | soft rubber | teflon PTFE |
| Maximum temperature of medium * | 90 °C | 90 °C | 130 °C |
| Standard pressure load Pressure range ** |
1,0 MPa 0,6 / 1,0 MPa |
1,0 MPa 0,6 / 1,0 / MPa |
1,0 MPa 0,6 / 1,0 MPa |
* Maximum temperature of measured medium consult with producer
** Construction of sensor and type of flange depends on the maximum
desired pressure of medium
Possible color variants of special sensors
STANDARD
to order
to order
practical assembly
