4-1
D Series Syringe Pumps
Section 4 Gradient Pumping for Pressure, Flow,
and Concentration Modes
4.1 Introduction Gradient pumping is used in applications requiring time-con-
trolled or rate-controlled delivery of a specific volume at a set
flow rate or pressure, or a two-pump flow concentration.
All Teledyne Isco syringe pump models can be used in gradient
mode. The model 65D requires special hardware for this. Call the
factory for complete information.
You can program the controller to increase or decrease pressure
or flow during different steps within a single program by
entering a specific value at the beginning and end of each step.
DANGER
RISK OF INJURY. THE PRESSURE PRODUCED
COULD BE 700 BAR. PLEASE UTILIZE
APPROPRIATE TUBING AND CONNECTIONS
NOTED IN THE MANUAL.
Tools and Parts for Single Pump System
Open-end wrenches:
1
/4",
5
/16",
7
/16",
3
/8"
Manual Refill Valve Kit - see Table 4-1
Manual Outlet Valve Kit - see Table 4-2
Tools and Parts for Dual Pump System
Open-end wrenches:
1
/4",
5
/16",
7
/16",
3
/8"
Manual Refill Valve Kit -
see Table 4-1 (two kits required)
Gradient Mixer Package - part #68-1247-080
Table 4-1 Manual Refill Valve Kits
Pump Model Part Number
1000D 68-1247-117
500D 68-1247-083
65DM, 100DM/DX, 260D 68-1247-077
65D 68-1247-127
30D 60-1247-180
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