Operating Conditions: Process; Medium Temperature Range; Conductivity; Medium Pressure Range (Nominal Pressure) - Endress+Hauser Proline Promag 50H Manual

Proline Promag 50H, 53H

Medium temperature range

Conductivity

!
Medium pressure range
(nominal pressure)

Pressure tightness

Limiting flow

Endress+Hauser

Operating conditions: Process

The permissible medium temperature depends on the sensor and the sealing material:
Sensor:
• DN 2 to 100 (1/12 to 4"): –20 to +150 °C (–4 to +302 °F)
Seals:
• EPDM: –20 to +150 °C (–4 to 302 °F)
• Viton: –20 to +150 °C (–4 to 302 °F)
• Silicone: –20 to +150 °C (–4 to 302 °F)
• Kalrez: –20 to +150 °C (–4 to 302 °F)
The minimum conductivity is:
• ≥ 5 μS/cm for fluids generally
• ≥ 20 μS/cm for demineralized water
Note!
In the remote version, the necessary minimum conductivity also depends on the cable length
(→ ä 17, Section "Length of connecting cable").
The permitted nominal pressure depends on the process connection and the seal:
• 40 bar (580 psi):
– flange EN 1092-1 (DIN 2501)
– weld socket for DIN EN ISO 1127 pipes and ODT (with O-ring seal)
• 16 bar (232 psi): all other process connections
Measuring tube lining: PFA
Nominal diameter
[mm] [inch] 25 °C
(77 °F)
2 to 100 1/12 to 4"
The diameter of the pipe and the flow rate determine the nominal diameter of the sensor.
The optimum flow velocity is between 2 to 3 m/s (6.5 to 9.8 ft/s). The velocity of flow (v), moreover, has to
be matched to the physical properties of the fluid:
• v < 2 m/s (6.5 ft/s): for small conductivities
• v > 2 m/s (6.5 ft/s): for fluids causing build-up such as high-fat milk etc.
Flow characteristic values (SI units)
Diameter Recommended flow rate
Min./max. full scale value
[mm] [inch] (v ~ 0.3 or 10 m/s)
2 1/12" 0.06 to 1.8 dm
4 1/8" 0.25 to 7 dm
8 3/8" 1 to 30 dm
15 ½" 4 to 100 dm
25 1" 9 to 300 dm
40 1½" 25 to 700 dm
50 2" 35 to 1100 dm
65 – 60 to 2000 dm
80 3" 90 to 3000 dm
100 4" 145 to 4700 dm
Limit values for abs. pressure [mbar] ([psi]) at fluid temperatures:
80 °C 100 °C
(176 °F) (212 °F)
0 0 0
Full scale value, current output
(v ~ 2.5 m/s)
3 3
/min 0.5 dm
3 3
/min 2 dm
3 3
/min 8 dm
3 3
/min 25 dm
3 3
/min 75 dm
3 3
/min 200 dm
3 3
/min 300 dm
3 3
/min 500 dm
3 3
/min 750 dm
3 3
/min 1200 dm
130 °C 150 °C
(266 °F) (302 °F)
0 0
Factory settings
Pulse value
(~ 2 pulses/s)
3
/min 0.005 dm
3
/min 0.025 dm
3
/min 0.10 dm
3
/min 0.20 dm
3
/min 0.50 dm
3
/min 1.50 dm
3
/min 2.50 dm
3
/min 5.00 dm
3
/min 5.00 dm
3
/min 10.0 dm
180 °C
(356 °F)
0
Low flow cut off
(v ~ 0.04 m/s)
3
0.01 dm /min
3
0.05 dm /min
3
0.1 dm /min
3
0.5 dm /min
3
1.00 dm /min
3
3.00 dm /min
3
5.00 dm /min
3
8.00 dm /min
3
12.0 dm /min
3
20.0 dm /min
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