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The tables below detail the Series 300 Pressure and Differential Pressure (DP) ranges available.

For each Range Code the range of adjustment of the switching point is given from MIN to MAX together with the units of measurement. E.g. The setpoint adjustment for a 344P is from 0.1 to 1.4 bar.

The % RESET figure (or switching differential) is the difference in pressure that must be applied to change the output switch state from ON to OFF (or OFF to ON), and is expressed a percentage of the switch range.

There are three standard diaphragm material options 1 - nitrile, 2 - PTFE and 7 - hastelloy C. Availability of a given diaphragm material for a selected range is indicated by a *, a blank indicates the diaphragm material is not available.

There are three standard process chamber material options 1 - aluminium, 5 - 316 stainless steel and 7 - hastelloy C. Availability of a given chamber material is indicated by a number in the appropriate column for a selected range. This number is the chamber proof pressure rating in bar. A blank would indicate that the chamber material is not available, a # indicates that availability must be checked with HNL Technical Sales.

PRESSURE RANGES (PRESSURES ARE GAUGE)
SETPOINT RANGES (P and PZ)
DIAPHRAGM
MATERIAL
 CHAMBER PROOF RATING (BAR)
MIN
MAX
UNITS
RANGE
CODE
%
RESET
ALUMINIUM
STAINLESS
STEEL
HASTELLOY C
1    2    7
1
5
7
-8
-15
8
15
mBar
mBar
314PZ
315PZ
2
*    *       
*    *       
0.5
0.5
 
-25
-50
25
50
mBar
mBar
324PZ
325PZ
2
*    *    *  
*    *    *  
2
2
2
2
#
#
-125
-250
-500
125
250
500
mBar
mBar
mBar
334PZ
335PZ
336PZ
2
*    *    *  
*    *    *  
*    *    *  
10
10
10
10
10
10
#
#
#
-0.6
-1
-1
0.6
1.4
6
Bar
Bar
Bar
344PZ
345PZ
346PZ
2
*    *    *  
*    *    *  
*    *    *  
30
30
30
30
30
30
#
#
#
25
50
100
300
250
500
1200
3500
mBar
mBar
mBar
mBar
334P
335P
336P
337P
2
*    *    *  
*    *    *  
*    *    *  
*    *    *  
10
10
10
10
10
10
10
10
 #
#
#
#
0.1
0.2
0.7
2
1.4
3
7
21
Bar
Bar
Bar
Bar
344P
345P
346P
347P
2
*    *    *  
*    *    *  
*    *    *  
*    *    *  
30
30
30
35
30
30
30
35
30
30
30
35
1.2
3
7
20
60
12
30
70
210
600
Bar
Bar
Bar
Bar
Bar
354P
355P
356P
357P
358P
3
     *    *  
     *    *  
     *    *  
     *    *  
          *  
 
250
250
250
350
1000
250
250
250
350
1000
DIFFERENTIAL PRESSURE RANGES (PRESSURES ARE DP)
SETPOINT RANGES (DP and DPZ)
DIAPHRAGM
MATERIAL
 CHAMBER PROOF RATING (BAR)
MIN
MAX
UNITS
RANGE
CODE
%
RESET
ALUMINIUM
STAINLESS
STEEL
HASTELLOY C
1    2    7
1
5
7
-8
-15
8
15
mBar
mBar
314DPZ
315DPZ
2.5
*    *       
*    *       
 
0.5
0.5
 
-25
-50
25
50
mBar
mBar
324DPZ
325DPZ
2.5
*    *    *  
*    *    *  
2
2
2
2
#
#
-125
-250
125
250
mBar
mBar
334DPZ
335DPZ
2.5
*    *    *  
*    *    *  
10
10
10
10
 
-100
-200
-400
100
200
400
mBar
mBar
mBar
334DPZM
335DPZM
336DPZM
3
          *  
          *  
          *  
 
300
300
300
 
25
50
100
300
250
500
1200
3500
mBar
mBar
mBar
mBar
334DP
335DP
336DP
337DP
2.5
*    *    *  
*    *    *  
*    *    *  
*    *    *  
10
10
10
10
10
10
10
10
#
#
#
#
20
40
100
300
200
400
1000
3000
mBar
mBar
mBar
mBar
334DPM
335DPM
336DPM
337DPM
3
          *  
          *  
          *  
          *  
 
300
300
300
300
 
0.7
2
10
7
21
100
Bar
Bar
Bar
346DPM
347DPM
348DPM
3
          *  
          *  
          *  
 
300
300
300
 
  Information from DATA SHEET TD300