Mid-West Instrument
Tel: (586) 254-6500 · Fax: (586) 254-6509
6500 Dobry Dr., Sterling Heights, Michigan 48314
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Product Selection Matrix
Differential Pressure Gauges
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Optional
Switches
±2%
0-5 PSID (0-0.35 bar)
0-110 PSID
(0-7 bar)
6000 (400)
1 or 2
121
±2%
0-5 PSID (0-0.35 bar)
0-110 PSID
(0-7 bar)
6000 (400)
1 or 2 switches or a 4-20mA Transmitter
±5%
0-5 PSID (0-0.35 bar)
0-110 PSID
(0-7 bar)
5000 (340)
1 or 2
±2%
0-150 PSID (0-10 bar)
0-400 PSID
(0-27 bar)
5000 (340)
1 or 2
124
±2%
0-5 PSID (0-0.35 bar)
0-150 PSID (0-10.0 bar)
0-110 (0-7.0 bar)
0-400 (0-27.0 bar)
10,000
1 or 2
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Optional
Switches
130
±2% or 5%
0-5" H20 (0-12.4 mbar)
0-400" H20
(0-1 bar)
500 (34)
1 or 2
140
±2%
0-25 PSID (0-1.7 bar)
0-100 PSID
(0-7 bar)
3000 (200)
1 or 2
141
±2% or 5%
0-50" H20 (0-125 mbar)
0-25 PSID
(0-1.7 bar)
3000 (200)
1 or 2
142
±2%
0-20" H20 (0-50 mbar)
0-25 PSID
(0-1.7 bar)
3000 (200)
1 or 2
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Optional
Switches
105
±1/2% or 1%
0-10" H20 (0-25 mbar)
0-80" H2O
(0-200 mbar)
500-6000
(34-400)
1 or 2
106
±1/2% or 1%
0-80" H20 (0-200 mbar)
0-400" H20
(0-1 bar)
500-6000
(34-400)
1 or 2
109
±1/2% or 1%
0-15 PSID (0-1 bar)
0-6000 PSID
(0-400 bar)
500-6000
(34-400)
1 or 2
Hazardous Location PDIS
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Switches
±2%
0-5 PSID (0-0.35 bar)
0-110 PSID
(0-7 bar)
5000 (340)
1 or 2
Class I DIV I
±2%
0-5 PSID (0-0.35 bar)
0-110 PSID
(0-7 bar)
5000 (340)
1 or 2
Class I DIV II
130 Div I
±2% or 5%
0-5" H20 (0-12.4 mbar)
0-400" H20
(0-1 bar)
500 (34)
1 or 2
Class I DIV I
±2%
0-50" H20 (0-125 mbar)
0-100 PSID
(0-7 bar)
3000 (200)
1 or 2
Class I DIV I
±2%
0-50" H20 (0-125 mbar)
0-100 PSID
(0-7 bar)
3000 (200)
1 or 2
Class I DIV II
±2%
0-5 PSID (0-0.35 bar)
0-100 PSID
(0-7 bar)
4000 (275)
1 or 2
Explosion Proof
±2%
0-5 PSID (0-0.35 bar)
0-100 PSID
(0-7 bar)
4000 (275)
1 or 2
Explosion Proof
240
±2%
0-20" H20 (0-50 mbar)
0-100 PSID
(0-7 bar)
1500 (102)
1 or 2
Explosion Proof
Indicating Transmitters

Hazardous Locations PDIS
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Output
121
±2%
0-5 PSID (0-0.35 bar)
0-110 PSID
(0-7 bar)
6000 (400)
4-20mA
124
±2%
0-5 PSID (0-0.35 bar)
0-150 PSID (0-10 bar)
0-110 PSID
(0-7 bar)
0-400 PSID
(0-27 bar)
10000 (680)
4-20 mA
140
±2% or 5%
0-25 PSID (0-1.7 bar)
0-100 PSID
(0-7 bar)
3000 (200)
4-20mA
141
±2% or 5%
0-50" H20 (0-125 mbar)
0-25 PSID
(0-1.7 bar)
3000 (200)
4-20mA
142
±2%
0-20" H20 (0-50 mbar)
0-25 PSID
(0-1.7 bar)
3000 (200)
4-20mA
220
±2%
0-5 PSID (0-0.35 bar)
0-100 PSID
(0-7 bar)
4000 (275)
4-20mA
240
±2%
0-20" H20 (0-50 mbar)
0-100 PSID
(0-7 bar)
1500 (102)
4-20mA
Liquid Level Cryo/Liquified Gas

Hazardous Locations PDIS
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Switches
115
±1%
0-10" H20 (25 mbar)
0-50" H20
(0-125 mbar)
1500
1 or 2
116
±1%
0-50" H20 (125 mbar)
0-400" H20
(0-1 bar)
500 Standard
1000 Optional
1 or 2
Indicators
Model
Accuracy
Min. ∆P Range
Max. ∆P Range
Max. Line
Pressure
PSIG (bar)
Optional
Switches
126
±5%
0-5 PSID (0-0.35 bar)
0-20 PSID
(0-1.4 bar)
3000 (200)
1 or 2
127
±5%
0-25 PSID (0-1.7 bar)
0-100 PSID
(0-7 bar)
3000 (200)
1 or 2
146
±5%
0-50" H20 (0-125 mbar)
0-30 PSID
(0-2.0 bar)
1000 (69)
1 or 2
444
±5%
0-5 PSID (0-0.35 bar)
0-25 PSID
(0-1.7 bar)
300 (20)
none
522
±5%
0-5 PSID (0-0.35 bar)
0-50 PSID
(0-3.4 bar)
1000 (69)
1 or 2
555
±5%
0-5 PSID (0-0.35 bar)
0-50 PSID
(0-3.4 bar)
300 (20)
none
Backflow Test Kits
Model
Accuracy
Gauge Type
Max. Range
PSID (kPa)
Max. Line
Pressure
PSIG (bar)
Carrying Case
830
±0.2 PSID
Diaphragm Differential
0-15 (0-100)
200 (14)
Included
835
±0.2 PSID
Diaphragm Differential
0-15 (0-100)
200 (14)
Included
±0.2 PSID
Diaphragm Differential
0-15 (0-100)
200 (14)
Included
±0.2 PSID
Diaphragm Differential
0-15 (0-100)
200 (14)
Included
845-5
±0.2 PSID
Diaphragm Differential
0-15 (0-100)
200 (14)
Included
Pulsation Dampener and Pressure Limiting Valve
Model
Material Type
Max. Line Pressure
PSIG (bar)
Product Description
150
Brass, 316 S.S., Aluminum
3000 - 10,000
(200-680)
Provides Infinitely Adjustable Dampening
200
Brass, 316 S.S., Aluminum
5000 - 10,000
(340-680)
Pressure Limiting Valve Prevents Instrument Over-range
Averaging Pitot Tubes - Delta Tube
Model
Material
Max. Working
Pressure (PSIG)
300
CPVC, Carbon Steel, 316 Stainless Steel - Pressure depends upon pipe size
130-4640
301
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
2980-3210
302
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
1550
306
Aluminum
15
307/308
316 Stainless Steel
15
311, 312
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
100
321, 322, 331, 332
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
1000-1225
323
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
275
341 thru 391
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
275-6170
342 thru 392
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
275-6170
343 thru 393
316 Stainless Steel - Attaching Hardware; Carbon Steel or 316 SS (opt)
275-6170