A method of monitoring components of a color measurement device comprising: illuminating, with at least one illuminator, a sample using an integrating sphere at a first time and at a second time; obtaining, from at least one sample channel sensor using at least one processor, a first sensor output signal measuring light reflected off the sample at the first time and a second sensor output signal measuring light reflected off the sample at the second time; obtaining, from at least one reference channel sensor using at least one processor, a first reference output signal measuring light reflected off a portion of the integrating sphere at the first time and a second reference output signal measuring light reflected off the portion of the integrating sphere at the second time; determining, using at least one processor, at least one of a reflectance value for the portion of the integrating sphere and at least one lamp intensity value for the at least one illuminator based on at least the first and second sample sensor output signal measurements and the first and second reference output signal measurements;wherein the reflectance value of the portion of the integrating sphere Rwall(t) is obtained according to: Rwall t = Rwall 0 ∗ Iwall t / Isam t Iwall 0 / Isam 0 where Isam is the raw signal of the sample obtained from the sample channel sensor at a first time and Isam(t) is the raw signal of the sample obtained from the sample channel sensor at the second time, Iwall is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the first time and Iwall(t) is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the second time;wherein the lamp intensity value llamp(t) is obtained according to: Ilamp t = Ilamp 0 ∗ Isam t 2 Isam 0 2 ∗ Iwall 0 Iwall t where Isam is the raw signal of the sample obtained from the sample channel sensor at a first time and Isam(t) is the raw signal of the sample obtained from the sample channel sensor at the second time, Iwall is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the first time and Iwall(t) is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the second time; the method further comprising comparing the at least one reflectance value for the reference area and the at least one lamp intensity value to a threshold value, and where at least one reflectance value for the reference area and the at least one lamp intensity value exceeds the threshold value; and generating an alert for display on a display device; and, wherein the processor is further configured to store the at least one reflectance value for the reference area and the at least one lamp intensity value in at least one data storage device. illuminating, with at least one illuminator, a sample using an integrating sphere at a first time and at a second time; obtaining, from at least one sample channel sensor using at least one processor, a first sensor output signal measuring light reflected off the sample at the first time and a second sensor output signal measuring light reflected off the sample at the second time; obtaining, from at least one reference channel sensor using at least one processor, a first reference output signal measuring light reflected off a portion of the integrating sphere at the first time and a second reference output signal measuring light reflected off the portion of the integrating sphere at the second time; determining, using at least one processor, at least one of a reflectance value for the portion of the integrating sphere and at least one lamp intensity value for the at least one illuminator based on at least the first and second sample sensor output signal measurements and the first and second reference output signal measurements;wherein the reflectance value of the portion of the integrating sphere Rwall(t) is obtained according to: Rwall t = Rwall 0 ∗ Iwall t / Isam t Iwall 0 / Isam 0 where Isam is the raw signal of the sample obtained from the sample channel sensor at a first time and Isam(t) is the raw signal of the sample obtained from the sample channel sensor at the second time, Iwall is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the first time and Iwall(t) is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the second time;wherein the lamp intensity value llamp(t) is obtained according to: Ilamp t = Ilamp 0 ∗ Isam t 2 Isam 0 2 ∗ Iwall 0 Iwall t where Isam is the raw signal of the sample obtained from the sample channel sensor at a first time and Isam(t) is the raw signal of the sample obtained from the sample channel sensor at the second time, Iwall is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the first time and Iwall(t) is the raw signal of the portion of the integrating sphere obtained by the reference channel sensor at the second time; the method further comprising comparing the at least one reflectance value for the reference area and the at least one lamp intensity value to a threshold value, and where at least one reflectance value for the reference area and the at least one lamp intensity value exceeds the threshold value; and generating an alert for display on a display device; and, wherein the processor is further configured to store the at least one reflectance value for the reference area and the at least one lamp intensity value in at least one data storage device.