Myron L 767 - Manual (Page 4)

Introduction
1.3 CONDUCTIVITY CELLS
Both 750 and 760 series conductivity models use the CS51 or
CS52 Series cell. The 1.0 cell constant CS51 model is
recommended for ranges of 0-20 through 20,000
µ
S. Its compact
size allows mounting in the top of a standard 3/4" tee. The
sturdy polypropylene bushing is modular for easy, inexpensive
replacement.
CS52 cells have a 10.0 constant and are used for conductivity
values above 20,000
µ
S.
1.3.1 CELL SPECIFICATIONS
CONSTANT:
CS51LC: 0.1
CS51: 1.0
CS52: 10.0
TEMPERATURE COMPENSATION:
Automatic to 25
°
C, between 32-212
°
F (0-100
°
C)
PRESSURE/TEMPERATURE LIMITS:
100 psi (689.6 kPa) at 212
°
F (100
°
C)
BUSHING:
CS51 (LC): Modular Polypropylene threaded 3 /
4
" NPT
CS52: 316 stainless steel 3 /
4
" NPT internal to cell body
CABLE:
Shielded; 10' (3 meters) standard; 25' (7 meters) and 100'
(30 meters) lengths also available.
DIMENSIONS:
CS51 (LC): Metal portion 1.2" (30mm) L; 0.5" (13mm) DIA
CS52: Contact factory for specifications
1.4 OPTIONAL FEATURES
-03: 3 cell input (767 only)
-420: 4-20 mA isolated output (758 only)
-420D: 4-20 mA self powered isolated output (758, 767 only)
-DP: Dual set point (767 only)
-RM: Remote meter (767 only)
1.4.1 ACCESSORIES
MODEL TYPE
PC: 110V Power cord (8 foot with plug and strain relief
fitting)
SMP50: Surface mounting plate for 750 series
SMP60: Surface mounting plate for 760 series
60AM: 4 1 /
2
" analog meter for 767-RM (specify range)
3CE: 3 cell switch with enclosure and trimplate
1.5 HOW TO ORDER MONITOR/CONTROLLERS
EXAMPLE:
This is a small digital monitor/controller with a 0-2000
µ
S range
and 4-20mA output.
NOTE:
Monitor model number does not include cell. Please specify
cell required when ordering.
MODEL TYPES:
755: Small controller only
756: Small analog monitor only (no relay)
757: Small analog monitor/controller
758: Small digital monitor/controller
767: Large 3-range analog monitor/controller
RANGE SUFFIXES:
See CONDUCTIVITY/ppm RANGES sheet, Page 3.
1.5.1 HOW TO ORDER CELLS
CS51 LC: For 0-2
µ
S range
CS51: For ranges 20 to 20,000
µ
S or ppm
CS52: For ranges above 20,000
µ
S or ppm see
CONDUCTIVITY/ppm RANGES sheet, Page 3.
CELL CABLE SUFFIX
-25: 25' (7 meters) shielded cell cable
-100: 100' (30 meters) shielded cell cable
2